Task: Question Answering
Input (English): Problem: a and b together can do a work in 2 days . a alone can do it in 12 days . what time b will take to do the work alone ? 
Options: a ) 2.4 days , b ) 8 days , c ) 1.2 days , d ) 1.0 days , e ) 5 days
Output (English): a