The Current in a Circuit Is Given By $i=4 t^{2} e^{8 / t}$

Multiple Choice

The current in a circuit is given by $i=4 t^{2} e^{8 / t}$ . Find the value of $t$ when $\frac{d i}{d t}=0$ .

A) $t=12$
B) $t=8$
C) $t=4$
D) $t=16$