The Plates of a Parallel Plate Capacitor Each Have an Area

The plates of a parallel plate capacitor each have an area of 0.40 m² and are separated by a distance of 0.02 m. They are charged until the potential difference between the plates is 3000 V. The charged capacitor is then isolated.
-How much work is required to move a -4.0 $\mu$ C charge from the negative plate to the positive plate of this system?

A) -1.2 × 10^-2 J
B) +1.2 × 10^-2 J
C) -2.4 × 10^-2 J
D) +2.4 × 10^-2 J
E) -5.4 × 10^-2 J