In the fern life cycle, how do spores and gametes differ?

A) Spores are produced mitotically; gametes are produced meiotically.
B) Meiotic cell division produces haploid spores; mitotic cell division produces haploid gametes.
C) Gametes are easily visible to the unaided eye; spores are not.
D) Gametes are diploid; spores are haploid.
E) Gametes are produced by the sporophyte.