A woman who has type 2 diabetes mellitus is now pregnant. She wants to know whether to take her oral antidiabetic medication. What instructions will she receive?

She should continue the antidiabetic medication at the same dosage.

The antidiabetic medication dosage will be increased gradually throughout her pregnancy.

She will be switched to insulin therapy while she is pregnant.

She will not receive any antidiabetic medication while pregnant and will need to monitor her dietary intake closely.