Task: Question Answering
Input (English): Problem: for integers x , y , and z , if ( 3 ^ x ) ( 4 ^ y ) ( 5 ^ z ) = 13107 , 200000 and x + y + z = 16 , what is the value of xy / z ? 
Options: a ) undefined , b ) 0 , c ) 3 , d ) 5 , e ) 7
Output (English): b