Discussion
What limits how large a gate bias resistor can be made?
Answer: C
Gate leakage through a very large resistor develops a voltage that shifts the operating point, and the shift grows exponentially with temperature. Capacitance, noise and settling time are all real secondary considerations. That the limit is set by a current the device is supposed not to draw is a good illustration of why negligible quantities have to be checked rather than assumed at the extremes.
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