OG 81题 求逻辑大神来帮忙啊

dazzle文佳

OG 81) which of the following most logically completes the argument?
the attribution of the choral work Lacrimae to the composer Pescard (1400-1474）has been regarded as tentative, since it was based on a single treatise from the early 1500s that named Pescard as the composer. Recently, several musical treatise from the late 1500s have come to light, all of which name Pescard as the composer of Lacrimae. Unfortunately, these newly discovered treatises lend no support to the attribution of Lacrimae to Pescard, since ______.

a) the treatise from the early 1500s misientifies the composers of some of the musical works it considers
b) the author of the treatise from the early 1500s had no very strong evidence on which to base to the identification of Pescard as the composer of Lacrimae
c) there are works that can conclusively be attributed to Pescard that are not even mentioned in the treatise from the early 1500s
d) the later treatises probably had no source for their attribution other than the earlier treatise
e) no known treatises from the 1600s identify Pescard as the composer of Lacrimae

求各位逻辑大神给思路啊，我读了半天， 感觉都没有正确理解题意。 是OG 81的题目。感恩的♥！

Joaluo

原文说要证明p是l的作者，1500s早期的一些treatise并不能完全确定，所以只能说暂定p是l的作者。而后来1500s晚期的一些treatise都指出了p是l的作者，但靠它并不能确定p就是l的作者。

答案是d，后来发现的这些treatise（1500s晚期的这些）可能只引用了早前这些treatise的资源来说明p是l的作者。原文注重的是这些新发现的treatise是否能带来额外的支持来证明p是l的作者，重点在于“additional”。也就是1500s晚期的这些资料里没有任何有价值的新发现