Task: Question Answering
Input (English): Question: An engineer undertakes a project to build a road 10 km long in 150 days and employs 30 men for the purpose. After 50 days, he finds only 2 km of the road has been completed. Find the (approximate) number of extra men he must employ to finish the work in time.

 Option A: 22

 Option B: 30

 Option C: 15

 Option D: 18

 Option E: 20
Output (English): Option B