Identify the valid statements relevant to the given circuit at the instant when the key is closed.

A. There will be no current through resistor R.
B. There will be maximum current in the connecting wires.
C. Potential difference between the capacitor plates A and B is minimum.
D. Charge on the capacitor plates is minimum.
Choose the correct answer from the options given below:

A. no current through resistor
wrong. at the instant of closing, the capacitor behaves like a short circuit, so the circuit is complete. current flows through the resistor and is not zero.

B. maximum current in wires
correct. initially the capacitor has zero voltage across it, so the entire battery voltage drives current through the circuit. hence current is maximum at that instant.

C. potential difference between plates A and B is minimum
correct. since the capacitor is uncharged at the beginning, the voltage across its plates is zero, which is the minimum possible value.

D. charge on capacitor plates is minimum
correct. at the instant of closing, no charge has yet accumulated on the capacitor, so the charge is zero, i.e., minimum.