Task: Question Answering
Input (English): Question: A walks at 4 kmph and 4 hours after his start, B cycles after him at 10 kmph. How far from the start does B catch up with A?

 Option A: 25km

 Option B: 26.7km

 Option C: 30km

 Option D: 32.5km

 Option E: 31.2km
Output (English): Option B