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