If abc = b^3 , which of the following must be true?
I. ac = b^2
II. b = 0
III. ac = 1	Choose the correct choice from the following options:
A) None
B) I only
C) II only
D) I and III
E) II and III
abc = b^3 implies abc - b^3 = 0   or b*(ac-b^2)=0   which implies either b=0 or ac=b^2   so, either of them or both of them can be true, but none of them must be true.   Nonenswer None
<result>A</result>
If abc = b^3 , which of the following must be true?
I. ac = b^2
II. b = 0
III. ac = 1