males of most species of moth -- kindly explain

[avixorld]

Scientists believe that unlike the males of most species of moth, the maile whistling moths of Nambung, Australia, call female moths to them by the use of acoustical signals, but not olfactory ones, and they attract their mates during the day, rather than at night.

(A) by the use of acoustical signals, but not olfactory ones, and they attract
(B) by the use of acoustical signals instead of using olfactory ones, and attracting
(C) by using acoustical signals, not using olfactory ones, and by attracting
(D) using acoustical signals, rather than olfactory ones, and attract
(E) using acoustical signals, but not olfactory ones, and attracting

[babaibabai]

I guess that the ans is D....what is Official Answer..??

[Retake_GMAT]

IMO D
A : they : prounoun Ref Error
B ; use of instead is invalid
C : vilotates parallelism
E :not parallel

[rrgmat]

IMO D, Official Answer pls?

[jay_m]

IMO D.

"Using" and "rather than" are the correct idiomatic expressions. Also, "attract" is a proper verb usage and is parallel to "call"

[avixorld]

Official Answer : D
But guys don't you think if C would be the answer if By is there in front of
not using olfactory ones
by using acoustical signals,by not using olfactory ones, and by attracting

[CrazyGmatter]

Male whistling moths call .....and attract - parallel..

Rather than is required to indicate preference.