Sentence Correction

Any medical test will sometimes fail to detect a condition when it is present and indicate that there is one
when it is not.
(A) a condition when it is present and indicate that there is one
(B) when a condition is present and indicate that there is one
(C) a condition when it is present and indicate that it is present
(D) when a condition is present and indicate its presence
(E) the presence of a condition when it is there and indicate its presence

IMO C

OA pls?

C for me too...

Why can't it be D... because indicate should follow with that??
otherwise, D sounds better... please clarify.

when it is not ==>> when it is present
BDE are out

there is incorrect here so A goes

Answer is C