Task: Question Answering
Input (English): Problem: in a can , there is a mixture of milk and water in the ratio 3 : 2 . if the can is filled with an additional 6 liters of milk , the can would be full and the ratio of milk and water would become 2 : 1 . find the capacity of the can ? 
Options: a ) 36 , b ) 34 , c ) 32 , d ) 30 , e ) 28
Output (English): a