The capacitance of a pixel of a CCD is 3.2 pF. A pulse of light is incident on the pixel and as a result, ${\text{1}}{{\text{0}}^{\text{4}}}$ electrons are ejected from the pixel. The magnitude of the change in potential of the pixel is

A.     $5.0 \times {10^{ - 16}}{\text{ V}}$

B.     $5.0 \times {10^{ - 4}}{\text{ V}}$

C.     $2.0 \times {10^3}{\text{ V}}$

D.     $2.0 \times {10^{15}}{\text{ V}}$

B