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Which of the following is not an advantage of using RF amplifiers in the initial stage of signal selection?

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Which of the following is not an advantage of using RF amplifiers in the initial stage of signal selection?

(a) Low noise

(b) Reduced oscillator radiation

(c) Better selectivity

(d) Less power consumption

This question was posed to me in unit test.

This question is from Communication Receivers in chapter Radio Transmitters, Communication Receivers, Multiplexing and Demultiplexing of Avionics

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Correct answer is (d) Less power consumption

The best explanation: The use of RF amplifiers in the initial stage of signal selection reduces the effect of noise.RF amplifiers improve sensitivity, because of the extra gain; improve selectivity, because of the added tuned circuits; and improve the S/N ratio. Further, spurious signals are more effectively rejected, minimizing unwanted signal generation in the mixer.

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