A black box has one of the elements our of R, L, C. when a 220 V a supply is connected the current supplied by source is I. when a 0.1 F capacitor is connected in parallel with the box, the current is 2I. The element is

• A. resistance
• B. inductance
• C. 0.1 F capacitance
• D. not identifiable on the basis of given data