Task: Question Answering
Input (English): Question: A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?

 Option A: 7 kmph

 Option B: 8 kmph

 Option C: 4 kmph

 Option D: 9 kmph

 Option E: 3 kmph
Output (English): Option B