Task: Question Answering
Input (English): Question: A can do 1/3rd the work in one day where as B can do it full. B can also do 1/3rd the work of C in one day. Ratio in their efficiency will be?

 Option A: 4:3:9

 Option B: 2:3:9

 Option C: 1:3:9

 Option D: 1:3:5

 Option E: 1:2:9
Output (English): Option C