45. A voltage-follower amplifier comes to you for service. You find the voltage gain to be 5.5 and the input impedance 22 kΩ. The probable fault in this amplifier, if any, is ________.
(a) the gain is too low for this type of amplifier.
(b) the input impedance is too high for this amplifier.
(c) nothing is wrong. The trouble must be somewhere else.
(d) none of these.
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