Use the following information to answer the next questions. There is a group of invertebrate animals called rotifers, among which a particular group of species reproduces, as far as is known, only asexually. These rotifers, however, have survived a long evolutionary history without evidence of having been overcome by excessive mutations. -In these asexual rotifers, how does variation occur without meiosis and fertilization?
A) The rotifers have evolved a different mechanism to exchange DNA. B) Rotifers must produce haploid spores. C) Variation is caused by mutation and maintained by selection. D) Some rotifers must selectively lose chromosomes. E) Rotifers must live only in specialized environments.