Which of the following is (are) true regarding the input impedance for frequencies in the midrange 100 kHz of a BJT transistor amplifier?

[A].	The input impedance is purely resistive.
[B].	It varies from a few ohms to megohms.
[C].	An ohmmeter cannot be used to measure the small-signal ac input impedance.
[D].	All of the above

Answer: Option D

Explanation:

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