A 42-year-old woman is diagnosed with type 2 diabetes after two pregnancies complicated by gestational diabetes. She has never been on medications for diabetes before. Which of the following is not a...

A 42-year-old woman is diagnosed with type 2 diabetes after two pregnancies complicated by gestational diabetes. She has never been on medications for diabetes before. Which of the following is not a first-line treatment option for type 2 DM?

A. Metformin

B. Insulin