Assertion. A pollen grain of angiosperm is considered as the male gametophyte .
Reason. All the nuclei of the pollen grain produce male gametes.
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 and but the Reason is false.
D. If both Assertion and Reason are false.
