Assertion :Coenzymes can be vitamins or minerals. Reason: NAD is an example of a coenzyme.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Assertion is incorrect but Reason is correct.

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Solution

The correct option is D Assertion is incorrect but Reason is correct.
Coenzymes are cofactors required for the activation of the enzymes. These are organic or carbon containing compounds or vitamin derivatives, but not minerals, that attach to the apoenzyme to form the holoenzyme. NAD is an example of a coenzyme and is derived from vitamin B $_{3}$ or Niacin
So, the correct answer is 'Assertion is incorrect but reason is correct'

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