Task: Question Answering
Input (English): If \(a > 0\) and \(b < 0\), which of the following must be true?
(A)\(a + b = 0\) (B)\(\frac { a } { b } < 0\) (C)\(a + b < 0\) (D)\(a + b > 0\) (E)\(ab > 0\)
Output (English): B