Please help me solve this problem

6. A 4.0 HF capacitor is charged for a long period of time with a 40 V battery. It is then switched from the battery to a 16 2 resistor as shown below. What is the approximate charge on the positive plate of the capacitor 48 usecs after the switch is closed at point b? 4-out = 4.0 KID A) 76 HC a b B) 339 HC + C) 42 HC 40 V WW 16 0 4 UF D) 160 HC Lov x 4 = 160 ul Because the resistor is parallel to potential difference V