Task: Question Answering
Input (English): Problem: a certain number of men can finish a piece of work in 100 days . if there were 10 men less , it would take 10 days more for the work to be finished . how many men were there originally ? 
Options: a ) 120 , b ) 105 , c ) 115 , d ) 110 , e ) 140
Output (English): d