A multicellular , filamentous alga exhibits a types of sexual life cycle in which the meiotic divison occurs after the formation of zygot. The adults filament of this alga has :
A. haploid vegtative cells and haploid gametangia
B. haploid vegtative cells and diploid gametangia
C. dipoled vegatative cells and dipoid gametagia
D. dipoled vegatative cells and hapoid gametagia