GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - 74GT477G4X_21B1PJ

Which of the following, if true, most seriously undermines the argument A. Few of the authenticated photographs of Lincoln show his cleft chin, since during his presidency (1860-1865) he was bearded. B. An authenticated photograph of Lincoln taken in 1846 clearly shows a cleft chin. C. The photograph was made by the daguerreotype process, an early photographic process in which no negative was produced. D. The 1843 photograph differs from authenticated photographs of Lincoln from the time before he was President in that those photographs show a man with a sunburned face and wearing rough clothes. E. There is no surviving documentary evidence from Lincoln's letters or elsewhere that he sat for a photograph at any time before 1846.