Task: Question Answering
Input (English): Question: A person can row at 9 kmph and still water. He takes 3 1/2 hours to row from A to B and back. What is the distance between A and B if the speed of the stream is 1 kmph?

 Option A: 16 km

 Option B: 87 km

 Option C: 89 km

 Option D: 67 km

 Option E: 20 km
Output (English): Option A