Which of the following statements correctly describes the alternation of generation cycle of a fern?

A)gametophyte-dominant (2n)life cycle where spores develop into photosynthetic sporophyte (n)
B)gametophyte-dominant (n)life cycle where spores develop into photosynthetic sporophyte (2n)
C)sporophyte-dominant (n)life cycle where 2 spores fuse to produce the zygote (2n)
D)sporophyte-dominant (2n)life cycle where spores develop into photosynthetic gametophytes (n)