Use Synthetic Division to Decide Whether $c$ Is a Zero of the Equation

Multiple Choice

Use synthetic division to decide whether $c$ is a zero of the equation. $f ( x ) = 7 x ^ { 4 } + 30 x ^ { 3 } - 4 x ^ { 2 } - 46 x + 9$ ; $c = - 4$

A) c is not a zero
B) c is a zero