At T = 0 the Switch S Is Closed with the Capacitor

Multiple Choice

At t = 0 the switch S is closed with the capacitor uncharged.If C = 50 $\mu$ F, $\varepsilon$ = 20 V,and R = 4.0 k $\Omega$ ,what is the charge on the capacitor when I = 2.0 mA?

A) 360 $\mu$ C
B) 480 $\mu$ C
C) 240 $\mu$ C
D) 600 $\mu$ C
E) 400 $\mu$ C