If ab^2c = b^4 , which of the following must be true?
I. ac = b^2
II. b = 0
III. ac = 1  Choose the correct option:  A) none  B) I  C) II  D) III  E) I &II
to fulfill conditions some assumptions are to be made b#0 etc.   none
<result>A</result>
If ab^2c = b^4 , which of the following must be true?
I. ac = b^2
II. b = 0
III. ac = 1