Discussion
Assertion (A) : The contents of Random Access memory is a volatile in nature. As soon as the power is removed to the IC, the contents are erased from the memory.
Reason (R) : The contents of Read-only Memory is a non-volatile in nature.
Answer: B
Both statements are true but the reason does not explain the assertion, which is option (B). RAM is volatile, so its contents are lost as soon as power is removed. ROM is non-volatile and retains its contents. That ROM keeps its data says nothing about why RAM loses it, since RAM's volatility comes from storing bits in flip-flops or charged capacitors that need power. Option (A) wrongly links the two, and (C) and (D) deny a true statement.
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