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For a transistor in saturation, which is true?

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For a transistor in saturation, which is true?

(a) IC = βIB

(b) IC > βIB

(c) IC < βIB

(d) IC = (β+1)IB

This question was posed to me during a job interview.

My question is taken from Transistor Switching Network topic in portion Transistor Biasing and Low Frequencies of Analog Circuits

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The correct choice is (c) IC < βIB

Easiest explanation: At saturation, collector current remains constant. However, the base current increases with the input voltage being applied and hence BJT cannot satisfy the relation IC = βIB. In the saturation region, βIB > IC is the correct relation.

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