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1. A small signal source vi(t) = A cos 20t + B sin106t is applied to a transistor amplifier as shown below. The transistor has β = 150 and hie = 3 kΩ. Which expression best approximates V0(t)
(A): v0(t) = -150 (A cos 20t + B sin 106t)
(B): v0(t) = -1500 (A cos 20t + B sin 106t)
(C): v0(t) = -1500 B sin 106t
(D): V0(t) = -1500 sin 106t
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