At the instant when the key is closed, the capacitor behaves as a short circuit because initially, it has no charge, and no potential difference across it.
A: There will be no current through resistor
R.
This is false because current flows initially as the capacitor behaves as a short circuit.
B: There will be maximum current in the connecting wires.
This is true because the capacitor is uncharged initially, and maximum current will flow through the circuit.
C: Potential difference between the capacitor plates A and B is minimum.
This is true because the capacitor is uncharged initially, so the potential difference across it is zero.
D: Charge on the capacitor plates is minimum.
This is true because the capacitor is initially uncharged.
Thus, the correct answer is:
(2).