Which of the following statement about alternation of generation in bryophytes is incorrect??

A. It involves alternation of morphologically different generations
B. Their gametophyte is independent while sporophyte depends upon gametophyte for nutrition. 
C. Both the gametophyte and sporophytes are haploid generations thus can produce haploids gametes to continue the diploid number on fertilization 
D. Spore formation occurs through meiosis