The common causative agents of cryptosporidiosis include （）

A.Cryptosporidium parvum　

B.Cryptosporidium hominis　

C.Cryptosporidium felis　

D.Cryptosporidium canis

正确答案：Cryptosporidium parvum；Cryptosporidium hominis；Cryptosporidium felis；Cryptosporidium canis