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In an ideal op-amp, which is not true?

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In an ideal op-amp, which is not true?

(a) Open loop voltage gain is infinite

(b) Input resistance is infinite

(c) Slew rate is infinite

(d) CMRR is zero

This question was addressed to me at a job interview.

My query is from Operational Amplifiers in chapter Op-amps and its Applications of Analog Circuits

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The correct option is (d) CMRR is zero

Easiest explanation: For an ideal op-amp, the open loop voltage gain is infinite. The output resistance is 0 and the input resistance is infinite. Op-amp has zero input current, zero offset voltage, infinite bandwidth, infinite CMRR and infinite slew rate.

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