Assertion: Sexual reproduction of Spirogyra is isogamous type.
Reason: Both of the fusing gametes of Spirogyra are nonglagellated and similar in size.
A. If both assertion and Reason are true and the reason is a correct explanation of the assertion.
B. If both Assertion and 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 and Reason are False.