The CMRR of an inverting amplifier always lower than that of its op-amp because _______.
A.
the common-mode gain of an op-amp increases when it is used in an inverting amplifier
B.
the value of differential gain for an inverting amplifier is lower than that of its op-amp
C.
slew-rate limiting decreases the common-mode gain of the op-amp
D.
of the lower input impedance of the inverting amplifier