Task: Question Answering
Input (English): Problem: in the youth summer village there are 125 people , 50 of them are not working , 25 of them have families and 75 of them like to sing in the shower . what is the largest possible number of people in the village , which are working , that do n ' t have families and that are singing in the shower ? 
Options: a ) 75 , b ) 80 , c ) 85 , d ) 100 , e ) 90
Output (English): a