Alternation of generations in flowering plants includes the formation of a

A)triploid sporophyte and haploid gametophyte.
B)haploid sporophyte and diploid gametophyte.
C)triploid sporophyte and diploid gametophyte.
D)diploid sporophyte and diploid gametophyte.
E)diploid sporophyte and a haploid gametophytE.