Assume that an electric field $\overrightarrow{E} = 30 x^2 \hat{i}$ exists in space. Then the potential difference $V_A - V_O$, where $V_O$ is the potential at the origin and $V_A$ the potential at $x=2$ is :

Question

( A ) -80 J
( B ) -80 V
( C ) -120 V
( D ) - 120 J