Many Parents-To-Be Have Questions About Multiple Births

Many parents-to-be have questions about multiple births. Maternity nurses should be able to tell them that:

A) Twinning and other multiple births are increasing because of the use of fertility drugs and delayed childbearing.
B) Dizygotic twins (two fertilized ova) have the potential to be conjoined twins.
C) Identical twins are more common in Caucasian families.
D) Fraternal twins are the same gender, usually male.