Task: Question Answering
Input (English): Problem: if f ( x ) = 3 x ^ 4 - 4 x ^ 3 - 2 x ^ 2 + 6 x , then f ( - 1 ) = 
Options: a ) - 2 , b ) - 1 , c ) 0 , d ) 1 , e ) 2
Output (English): b