A Patient Who Has Diabetes Is Taking Metformin 1000 Mg

A patient who has diabetes is taking metformin 1000 mg daily.At a clinic visit,the patient reports having abdominal pain and nausea.The primary care NP notes a heart rate of 92 beats per minute.The NP should:

A) obtain LFTs.
B) decrease the dose of metformin.
C) change metformin to glyburide.
D) order electrolytes, ketones, and serum glucose.