Task: Question Answering
Input (English): Question: The speed at which a man can row a boat in still water is 15 km/hr. If he rows downstream, where the speed of current is 3 km/hr, how many seconds will he take to cover 90 meters?

 Option A: 12

 Option B: 16

 Option C: 17

 Option D: 18

 Option E: 20
Output (English): Option D