Task: Question Answering
Input (English): Problem: a , b , c , d , and e are positive consecutive integers and a < b < c < d < e . if the sum of a + b is one less than e , and the product of ab is one more than d , then what is the value of c ? 
Options: a ) 3 , b ) 4 , c ) 5 , d ) 6 , e ) 7
Output (English): b