[单选题]
The power factor of an RLC circqtlc60efn4, d uikn)s.qoo gr,np 49 :uit is defined as fpdynz .:kfh2c hp p4v,xp9/s.*3tg / ;pmito $\cos M = R/Z$, but the phase angle can also be calculated from .
A. $\sin M = (X_L - X_C)/Z$
B. $\sin M = (X_L - X_C)/RZ$
C. $\sin M = Z/(X_L - X_C)$
D. $\sin M = RZ/(X_L - X_C)$
