Task: Question Answering
Input (English): Question: Given that a/b < 1, and both a and b are positive integers, which one of the following must be greater than 1?

 Option A: a/b^2

 Option B: a^2/b

 Option C: a^2/b^2

 Option D: b/a

 Option E: √(a/b
Output (English): Option D