Task: Question Answering
Input (English): Problem: 20 beavers, working together in a constant pace, can build a dam in 3 hours. how many hours c will it take 12 beavers that work at the same pace, to build the same dam ?
Options: a. 2., b. 4., c. c = 5., d. c = 6., e. 8.
Output (English): c