The correct option is A Haploid
When moisture and abundant food material are available, the basal vegetative hyphae produce erect aerial unbranched hyphae, called as sporangiophores. These are always produced singly. When erect hyphal sporangiophores are formed. The tip of the sporangiophore swells to form a globose sporangium that contains uninucleate, haploid sporangiospores. An extension of the sporangiophore called as, the columella protrudes into the sporangium. The sporangium walls are easily ruptured to release the spores, which germinate readily to form a new mycelium on appropriate substrates.