Task: Question Answering
Input (English): Question: If a, b, and c are integers and a*b^2/c is a positive even integer, which of the following must be true?
I. ab > 0
II. ab is even
III. c is even

 Option A: I only

 Option B: II only

 Option C: I and II

 Option D: I and III

 Option E: I, II, and III
Output (English): Option B