Read the assertion and reason carefully to mark the correct option ...

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Read the assertion and reason carefully to mark the correct option out of the options given below:
(a) If both assertion and reason are true and the reason is the
\( \mathrm{P} \) correct explanation of the assertion.
(b) If both assertion and reason are true but reason is not the
W correct explanation of the assertion.
(c) If assertion is true but reason is false.
(d) If the assertion and reason both are false.
(e) If assertion is false but reason is true.
Assertion : Consider motion for a mass spring system under gravity, motion of \( M \) is not a simple harmonic motion unless \( M g \) is negligibly small.

Reason : For simple harmonic motion acceleration must be proportional to displacement and is directed towards the mean position.
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