Task: Question Answering
Input (English): Problem: ifaequals the sum of the even integers from 2 to 60 , inclusive , andbequals the sum of the odd integers from 1 to 59 , inclusive , what is the value of a - b ? 
Options: a ) 1 , b ) 10 , c ) 30 , d ) 20 , e ) 21
Output (English): c