A Uniform Electric Field of 8 V/m Exists Between the Plates

A uniform electric field of 8 V/m exists between the plates of a parallel plate capacitor. How much work is required to move a +20 $\mu$ C point charge from the negative plate to the positive plate if the plate separation is 0.050 m?

A) 0.4 J
B) 1.6 J
C) 8 × 10^-4 J
D) 8 × 10^-5 J
E) 8 × 10^-6 J