To read of Adams’ lengthy separation from her family, her difficult travels, and her constant battles with illness is to fell intensely how harsh life was even for the so-called aristocracy of Revolutionary times.
(A) To read of
(B) Reading about
(C) Having read about
(D) Once one reads of
(E) To have read of
Authors bio is coming up shortly. 
C
A
C
E) To have read of
(E) To have read of – “is to fell intensely how harsh life was ”
(A) To read of – “is to feel intensely how harsh life was “
It would have to be A itself as “fell” here is probably used as an adjective
c
(c)
A
A
E
A
A
E
A
my answer is b, please advise which is the right answer
C
(B)