Given below are two statements, one labelled as In the light of the above statements, choose the correct answer from the options given below.

Assertion (A):Static RAM is typically used for a PC's main memory while dynamic RAM is used for the CPU cache.

Reason (R):Static RAM is faster and more expensive than dynamic RAM.

ABoth A and R are correct and R is the correct explanation of A

BBoth A and R are correct but R is not the correct explanation of A

CA is correct but R is not correct

DA is not correct but R is correct ✓ Correct

Correct answer: (D) A is not correct but R is correct

Explanation

Static RAM is faster and more expensive than dynamic RAM, so the reason is true.

The assertion is wrong because it reverses the usual roles of the two types.

Dynamic RAM, being cheaper and denser, is actually used for a PC's main memory.

Static RAM, being faster, is actually used for the CPU cache.

Static RAM holds data without refreshing while dynamic RAM must be refreshed constantly.

This refreshing requirement makes dynamic RAM slower but cheaper to make.

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