For a transistor amplifier, the voltage gain

Options

A. is low at high and low frequencies and constant at mid frequencies
B. remains constant for all frequencies
C. constant at high frequencies and low at low frequencies
D. is high at high and low frequencies and constant in the middle frequency range.

Answer

A

Explanation

(a): At low frequency, reactance of capacitor is high. At high frequency, input capacitor influence is negligible.