If c is 30% of a and 25% of b, what percent of a is b?
Select: A) 2.5 % B) 15 % C) 120 % D) 35 % E) 250 %

Rationale: "answer = c 30 a / 100 = 25 b / 100 b = 30 a / 25 = 120 a / 100 = 120 %"
Answer: C