Task: Question Answering
Input (English): Problem: in x - y plane , there is a right triangle abc ( ∠ b = 90 o ) . if the length of ac is 25 and the slope of line segment ac is 4 / 3 , what is the length of ab ? 
Options: a ) 12 , b ) 18 , c ) 24 , d ) 20 , e ) 40
Output (English): d