A tuned amplifier is generally operated in class B operation.
In class B operation, the transistor is turned on and off at the peaks of the input signal. This means that the transistor is only amplifying the positive half-cycles of the input signal, and the negative half-cycles are passed through with no amplification. This results in a lower output signal level than class A operation, but it also results in lower distortion.
Class A operation is characterized by the transistor being turned on throughout the entire input signal cycle. This results in a higher output signal level than class B operation, but it also results in higher distortion.
Class C operation is characterized by the transistor being turned on for only a small portion of the input signal cycle. This results in the highest output signal level of the three classes, but it also results in the most distortion.
None of the above is not a valid option.