Which of the following conditions occur at resonance in a series RLC circuit?

i. Impedance equal resistance

ii. Current is maximum

iii. Reactance is maximum

iv. Current and voltage are 90o out of phase

A. i and ii only
B. i and ii only
C. i, ii and iii only
D. i, ii, iii and iv

Correct Answer: Option A

A. i and ii only