In Terms of the Incidence and Classification of Diabetes,maternity Nurses

In terms of the incidence and classification of diabetes,maternity nurses should know that:

A) Type 1 diabetes is most common
B) Type 2 diabetes often goes undiagnosed
C) Gestational diabetes mellitus (GDM) means that the woman will receive insulin treatment until 6 weeks after birth
D) Type 1 diabetes may become type 2 during pregnancy