An RC Circuit Consists of a Resistor with Resistance 1

An RC circuit consists of a resistor with resistance 1.0 k,a 120-V battery,and two capacitors,C₁ and C₂,with capacitances of 20.0 µF and 60.0 µF,respectively.Initially,the capacitors are uncharged;and the switch is closed at t = 0 s.
-Determine the total charge on both capacitors two time constants after the switch is closed.

A) 1.3 × 10^-³ C
B) 2.2 × 10^-³ C
C) 4.7 × 10^-³ C
D) 6.1 × 10^-³ C
E) 8.3 × 10^-³ C