判定下面实例中包含的推理是否有效
意大利的都灵大教堂，珍藏了相传是包裹耶稣尸体的布，该布是用细亚麻织成的。一次，神学院的4名学生对此物发表了以下看法：学生A：这圣物是真的。因为如果它是假的，那么，它不能一直被我们的教友所敬奉。事实上，我们都是虔诚地敬奉它，可见它是真的。学生B：我也认为是真的。这道理很简单，如果它是真的，那它上面必有大量血迹，因为它是用来包裹尸体的，我们亲眼所见它上面的斑斑血迹，可见它是真的。学生C：我同意B的分析，我补充一点，只有有血迹，它才是圣物；我们亲眼看到它上面血迹很多，无疑它是圣物了。学生D：它根本不是什么圣物。纺织史研究表明，在欧洲亚麻细布直到公元2世纪才出现。这说明，如果它是真的，那么，耶稣应当是公元2世纪以后受难的，可是圣经上都说他在公元1世纪受难。可见这不是圣物。
Little Lady Starts Big War
Harriet Beecher Stowe had poured her heart into her anti-slavery(反对奴隶制度) book Uncle Tom's Cabin.【46】The publisher was so doubtful that he wanted her to split the publishing costs with him, and all she hoped was that it would make enough money for her to buy a new silk dress.
But when the first 5,000 copies were printed in 1852, they sold out in two days. In a year the book had sold 300,000 copies in the United States and 150,000 in England.【47】Within six months of its release, a play was made from the book which ran 350 performances in New York and remained America's most popular play for 80 years. It might appear that Uncle Tom's Cabins was universally popular, but this was certainly not true, Many people during those pre-Civil War days — particularly defenders of the slavery system — condemned it as false propaganda(宣传) and poorly written melodrama (传奇剧 作品).
Harriet did have strong religious views against slavery (When asked how she came to write the book, she replied: "God wrote it."), and she tried to convince people slavery was wrong, so perhaps the book could be considered as propaganda.【48】
Though she was born in Connecticut in 1832, as a young woman she moved to Cincinnati, Ohio, when her father accepted the presidency (任期) of newly founded Lane Theological Seminary (神学院). Ohio was a free state, but just across the Ohio River in Kentucky, Harriet saw slavery in action. She lived 18 years in Cincinnati, marrying Calvin Stowe, professor of a college.【49】
【50】Today some historians (历史学家) think that it helped bring on the American Civil War.
In fact, when Abraham Lincoln met Harriet at the White House during the Civil War, he said. "So, this is the little lady who started this big war. "
A. She had read a lot about the slavery system.
B. Its vast influence strengthened the anti-slavery movement and angered defenders of the slavery system.
C. But if so, it was true propaganda, because it accurately described the evils of slavery.
D. For a while it outsold every book in the world, except the Bible.
E. But neither she nor her first publisher thought it would be a big success.
F. In 1851, Harriet Beecher Stowe began her book.
(46)