【单选题】An operational amplifier, as used in todays consoles, may have a calculated gain of 5.This means that as the input changes by _____.
A.
1 volt, the output changes 5 volts
B.
5 volts, the output changes 1 volt
C.
5 volts, the output changes 10 volts
D.
10 volts, the output changes 5 volts