A Pair of Parallel Conducting Plates Have Potentials of −17

A pair of parallel conducting plates have potentials of −17 V and 55 V, respectively. How much work needs to be done on an electron in order to move it from the 55 V to the −17 V plate?

A) 6.1 × 10⁻¹⁸J
B) −6.1 × 10⁻¹⁸J
C) 1.2 × 10⁻¹⁷J
D) −1.2 × 10⁻¹⁷J