Heterosporous pteridophytes always produce

Assertion $(A)$: In $Equisetum$,sexual reproduction occurs through sex organs like antheridia and archegonia.
Reason $(R)$: In pteridophytes,the gametophytic phase is long-lived and responsible for sexual reproduction.

Identify the pair of heterosporous pteridophytes among the following:

Heterospory,i.e.,the formation of two types of spores—microspores and megaspores—is a characteristic feature in the life cycle of a few members of pteridophytes and all spermatophytes. Do you think heterospory has some evolutionary significance in the plant kingdom?

In $Dryopteris$,the sori are borne:

Identify $A, B$ and $C$ in the following figure and choose the correct option.