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Which of these is incorrect for a common gate amplifier?

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Which of these is incorrect for a common gate amplifier?

(a) It is a current  buffer

(b) It has ∞ output resistance

(c) Its input resistance is high

(d) It is used as a high-frequency amplifier

This question was addressed to me in an international level competition.

I'd like to ask this question from JFET Amplifier in chapter FET Amplifiers of Analog Circuits

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Right choice is (c) Its input resistance is high

For explanation I would say: A common gate amplifier can be used as a current buffer since its current gain is 1. It has very high output resistance (∞) and low input resistance. It is often used as a high-frequency amplifier.

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