71. Identify the monomer(s) which are used to prepare the following segment of polymer:
- CH2CH=CHCH2CH(C6H5)CH2CH2CH=CHCH2CH(C6H5)CH2-
(A) CH2=CH2 and CH2=CHC6H5 (B) CH2=CHCH=CH2 and CH2=CHC6H5 (C) CH2=C(C6H5)CH=CH2
(D) C6H5CH=CHCH=CH2 (E) CH2=C=CH2 and CH2=CHC6H5