The Wife of an Older Man Who Has Diabetes Mellitus

The wife of an older man who has diabetes mellitus brings him to primary care.He has severe bilateral infections forming black rings around each ankle.He tells the nurse it is caused by tight shoes.Which intervention should the nurse implement first to investigate this individual's health care regimen?

A) Examine his health insurance coverage.
B) Question the man without the wife present.
C) Consult with social services about neglect.
D) Analyze his glycosylated hemoglobin level.