Peter Brosnan and John Parker

jain2016 wrote:In 1983, using both ground-penetrating radar equipment—much of it constructed themselves—as well as clues from the autobiography of film director Cecil B. DeMille, the film enthusiasts Peter Brosnan and John Parker located and unearthed the massive set of DeMille's epic 1923 film The Ten Commandments.

A) much of it constructed themselves—as well as clues from the autobiography of film director Cecil B. DeMille, the film enthusiasts Peter Brosnan and John Parker

B) they constructed much of it themselves, and used clues from film director Cecil B. DeMille's autobiography—Peter Brosnan and John Parker, the film enthusiasts,

C) constructing much of it themselves—and taking clues from film director Cecil B. DeMille's autobiography, Peter Brosnan and John Parker were film enthusiasts who

D) they constructed much of it themselves, as well as clues from film director Cecil B. DeMille's autobiography—Peter Brosnan and John Parker were film enthusiasts who

E) much of which they constructed themselves—and clues from the autobiography of film director Cecil B. DeMille, film enthusiasts Peter Brosnan and John Parker

C) constructing much of it themselves—and taking clues from film director Cecil B. DeMille's autobiography, Peter Brosnan and John Parker were film enthusiasts who

C: both...equipment...and taking
Here, equipment and taking are not parallel forms.
Eliminate C.

rsarashi wrote:Hi GMATGuruNY ,

Just a quick question,can you please advise that the uses of POSSESSIVE in option C is correct?

Please explain.

Thanks.