Task: Question Answering
Input (English): Problem: the volume of a certain substance is always directly proportional to its weight . if 48 cubic inches of the substance weigh 112 ounces , what is the volume , in cubic inches , of 63 ounces of this substance ? 
Options: a ) 27 , b ) 36 , c ) 42 , d ) 64 , e ) 147
Output (English): a