Animals Inherited a Sexual Life Cycle from Their Protistan Ancestors

Animals inherited a sexual life cycle from their protistan ancestors. In what way have animals modified the life cycle characteristic of most protists?

A) In animals, the haploid cells undergo multiple rounds of mitotic cell division before sexual fusion takes place.
B) In animals, the diploid zygote undergoes multiple rounds of mitotic cell division before sexual fusion takes place.
C) Animals have no haploid phase in their life cycle.
D) Animals do not form zygotes as part of their life cycle.