Task: Question Answering
Input (English): If \(\frac { a } { b } \) is an even number, where \(a\) and \(b\) are integers, which of the following must also be an even number?
(A)\(\frac { b } { a } \) (B)\(a + b\) (C)\(a - b\) (D)\(a\) (E)\(b\)
Output (English): D