Task: Question Answering
Input (English): Problem: in a certain parking lot , 3 % of the cars are towed for parking illegally . however 80 % of the cars which are parked illegally are not towed . what % of cars in the parking lot are parked illegally . ' 
Options: a ) 11 , b ) 13 , c ) 15 , d ) 60 , e ) 75
Output (English): c