A 35 yr old woman presents to the clinic 1 month after birth. During pregnancy, she was diagnosed with gestational diabetes. Mom and sister also had gestational diabetes. In her follow-up, her glucose is mildly elevated. What is the most likely underlying dx?
a) Type 1 diabetes mellitus
b) Type 2 diabetes mellitus
c) Gestational diabetes mellitus
d) Maturity-onset diabetes of the young (MODY)