Task: Question Answering
Input (English): Question: A man on tour travels first 160 km at 64 km/he and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is?

 Option A: 71.12

 Option B: 71.19

 Option C: 71.11

 Option D: 71.132

 Option E: 71.16
Output (English): Option C