Which of the following statements is/are incorrect?

Options

A. If the resonance is less sharp, not only is the maximum current less, the circuit is close to resonance for a larger range `Delta omega` of frequencies and the tuning of the circuit will not be good.
B. Less sharp the resonance less is the selectivity of the circuit or vice–versa.
C. If quality factor is large, i.e., R is low or L is large, the circuit is more selective.
D. Below resonance, voltage leads the current while above it, current leads the voltage