Task: Question Answering
Input (English): If \(rst < 0\) and \(r^3 \times s^2 \times t > 0\), which of the following must be true?
(A)\(r > 0\) (B)\(r < 0\) (C)\(t > 0\) (D)\(s < 0\) (E)\(s > 0\)
Output (English): D