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 = 40 $\mu$ F, $\varepsilon$ = 50 V,and R = 5.0 k $\Omega$ ,how much energy is stored by the capacitor when I = 2.0 mA?

A) 20 mJ
B) 28 mJ
C) 32 mJ
D) 36 mJ
E) 40 mJ