Task: Question Answering
Input (English): Problem: a and b walk around a circular track . they start at 8 a . m from the same point in the opposite directions . a and b walk at a speed of 2 rounds per hour and 3 rounds per hour respectively . how many times shall they cross each other before 9 a . m 
Options: a ) 5 , b ) 6 , c ) 7 , d ) 8 , e ) 9
Output (English): a