Task: Question Answering
Input (English): Problem: a certain family has 3 sons : richard is 6 years older than david , and david is 8 years older than scott . if in 8 years , richard will be twice as old as scott , then how old was david 2 years ago ? 
Options: a ) 8 , b ) 12 , c ) 12 , d ) 14 , e ) 16
Output (English): b