If A's salary is 20% less than B's salary, by how much percentage is B's salary more than A's? Choose the correct choice from the following answers
A) 25 % B) 15 % C) 30 % D) 32 % E) 40 %

Rationale: "required percentage = [ 100 * 20 / ( 100 - 20 ) ] % = 25 % answer is a"
Answer: A