Which square (A, B, C, or D) represents the repeating subunit of the polymer shown?
I-0-0
I-0-0
I-U-I
I-O-0
I-O-I
I-O-
I-O-I
I 0
-C-
CH, À CH, ACH,
CH, À
3
CH, H
A
B
С
D

Which square A B C or D represents the repeating subunit of the polymer shown I00 I00 IUI IO0 IOI IO IOI I 0 C CH À CH ACH CH À 3 CH H A B С D class=