A Typical Hearing Aid Battery Has a Capacity of 5 $\times$

A typical hearing aid battery has a capacity of 5 ampere-hour (A $\times$ hr) and can supply up to 23.4 kJ of energy. What is the voltage of the battery?

A) 78 V
B) 1.3 V
C) 1.3 $\times$ 10^-3 V
D) 7.8 $\times$ 10^-3 V
E) 0.90 V