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Assertion : First heart sound (LUBB) is ...

Assertion `:` First heart sound (LUBB) is produced at the beginning fo ventricular systole stage.
Reason `:` During ventricular systole semilunar valves are closed.

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are false.

Text Solution

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