What chromosome set is characteristic for spores, gametophytes and sporophytes of moss cuckoo flax?

What chromosome set is characteristic for spores, gametophytes and sporophytes of moss cuckoo flax? From what source cells and as a result of what division do these stages of moss development form?

1) Spore and gametophyte moss contain a haploid set of chromosomes, and the sporophyte is diploid.
2) A spore is formed as a result of meiosis from spore-bearing sporophyte cells, and a gametophyte is formed from spore by mitosis.
3) Sporophyte is formed after fertilization from the zygote by mitosis.

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