An Uncharged Capacitor and a Resistor Are Connected in Series $\varepsilon$

Multiple Choice

An uncharged capacitor and a resistor are connected in series to a battery as shown. If $\varepsilon$ = 15 V,C = 20 $\mu$ F,and R = 4.0 $\times$ 10⁵ $\Omega$ ,the current as a function of time for this circuit is

A) I(t) = 37.5 e^-0.250t $\mu$ A
B) I(t) = 150 e^-0.250t $\mu$ A
C) I(t) = 37.5 e^-0.125t $\mu$ A
D) I(t) = 300 e^-0.125t $\mu$ A