Which sentence has correct capitalization?

Question

A.
James Anderson, md, is a doctor from Madison, WI.
B.
James Anderson, MD, is a doctor from Madison, WI.
C.
James Anderson, MD, is a doctor from Madison, wi.
D.
James Anderson, md, is a doctor from Madison, wi.

Answer 1

The sentence with correct capitalization is:
B. James Anderson, MD, is a doctor from Madison, WI.