Task: Question Answering
Input (English): Problem: alok ordered 16 chapatis , 5 plates of rice , 7 plates of mixed vegetable and 6 ice - cream cups . the cost of each chapati is rs . 6 , that of each plate of rice is rs . 45 and that of mixed vegetable is rs . 70 . the amount that alok paid the cashier was rs . 1021 . find the cost of each ice - cream cup ? 
Options: a ) 35 , b ) 66 , c ) 77 , d ) 99 , e ) 91
Output (English): a