A 500- $\mu$ F Capacitor Has 3 $\mu$ C of Charge on the Plates

A 500- $\mu$ F capacitor has 3.7 $\mu$ C of charge on the plates. The electric potential energy stored in the capacitor is

A) $7.1 \times 10 ^ { - 8 }$ J.
B) $5.5 \times 10 ^ { - 9 }$ J.
C) $1.4 \times 10 ^ { - 8 }$ J.
D) $8.6 \times 10 ^ { - 9 }$ J.