Sentence Correction

The lawyer for the defense charged that she suspected the police of having illegally
taped her confidential conversations with her client and then used the information
obtained to find evidence supporting their murder charges.
(A) used the information obtained to find evidence supporting
(B) used such information as they obtained to find evidence supporting
(C) used the information they had obtained to find evidence that would support
(D) of using the information they had obtained to find evidence that would support
(E) of using such information as they obtained to find evidence that would be supportive
of

oa is D

Answer should be D

It has the phrase 'of using' which is parallel with 'of having' in the question

E has the same parallel phrase ' of using' but wrong because the phrase 'as they obtained' is meaningless .