Problem 11-46 Current and potential change

In a particular lightning bolt, $24 \;C$ of charge are transferred in $0.21\; s$ through a potential difference of $5.5 \times10^8\; V.$

(a) What is the average current?
(b) How much electric potential energy is dissipated?

The relationship between charge $(q)$, time $(t)$ and current $(I)$ is:

(A)   $I = qt$

(B)   $I = t/q$

(C)   $I = q/t$