Sentence Correction

Camille Claudet worked continuously through the 1880's and early 1890's with the sculptor Auguste Rodin; since there are very few signed works of hers, the inescapable conclusion seems to be one of Claudet conceiving and executing part of Rodin's enormous production of that period.

(A) inescapable conclusion seems to be one of Claudet conceiving and executing part of Rodin's enormous production of that period
(B) conclusion of Claudet conceiving and executing part of Rodin's enormous production of that period seems inescapable
(C) conclusion seems inescapable that part of Rodin's enormous production of that period was conceived and executed by Claudet
(D) conclusion of part of Rodin's enormous production of that period having been conceived and executed by Claudet seems inescapable
(E) seemingly inescapable conclusion is that Claudet would have conceived and executed part of Rodin's enormous production of that period

between c) and e) i chose e) for active voice but the answer is c)

i do not understand why?

Please help me understand the specific grammar rule violated by e) and the reason why c) is a better choice.