The subsequent problems deal with the circuit below. Assume that when the transistor is in saturation, the collector-to-emitter drop is 0.2 V and the base-to-emitter forward bias voltage is 0.7 V.
When Vin = 5V, the voltage at the base of the transistor is
A. 0.7 V
B. 4.3 V
C. 0 V
D. 5 V
E. 0.2 V
Answer: A
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