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Assertion: Smaller the organism higher is the rate of metabolism per gram weight.

Reason: The heart rate of a six month old baby is much higher than that of an old person.

Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
Assertion is true statement but Reason is false.
Both Assertion and Reason are false statements.
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