Task: Question Answering
Input (English): Problem: a cat chases a rat 6 hours after the rat runs . cat takes 4 hours to reach the rat . if the average speed of the cat is 90 kmph , what s the average speed of the rat ? 
Options: a ) 32 kmph , b ) 26 kmph , c ) 35 kmph , d ) 36 kmph , e ) 32 kmph
Output (English): d