Task: Question Answering
Input (English): Question: Two trains of equal lengths take 8 sec and 15 sec respectively to cross a telegraph post. If the length of each train be 120 m, in what time will they cross other travelling in opposite direction?

 Option A: 22

 Option B: 12

 Option C: 77

 Option D: 10

 Option E: 21
Output (English): Option D