Statement I: The reactance of an ac circuit is zero. It is possible that the circuit contains a capacitor and an inductor
Statement II: In ac circuit, the average power delivered by the source never becomes zero. 

In the light of the above statement, choose the correct answer from the options given below.

In a circuit, reactance can be zero either if there are no inductors and capacitors in the circuit, or the individual reactance of inductors and capacitors cancel each other, making net reactance zero.  

In ac circuit, the average power delivered by the source becomes zero when circuit contains only inductance or capacitance or combination of inductance and capacitance. The resistance should be zero.