Assertion : Endothecium layer of anther wall plays an important role in dehiscence of anther. Reason : The presence of fibrous bands and differential expansion of inner and outer tangential walls of endothecial cells cause dehiscence of anther.

Options

1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
3. CIf assertion is true but reason is false.
4. DIf both assertion and reason are false.