If 2ab - 5c = 2a(b - c), which of the following must be true?	Options:	A) a=0 and c=0	B) a=1/2 and b=2	C) b=1 and c=0	D) a=1 or b=0	E) a=5/2 or c=0
2ab-5c = 2a (b-c)   2ab - 5c = 2ab - 2ac   5c= 2ac   2ac-5c = 0   c(2a-5) = 0   a=5/2 or c=0ither c = 0; or a = 5/2   a=5/2 or c=0 is the answer
<result>E</result>
If 2ab - 5c = 2a(b - c), which of the following must be true?