Which sentence is punctuated correctly?

A.
I understand that Dr. Elliott earned his M.D. at Columbia University.

B.
I understand that Dr, Elliott earned his MD at Columbia University.

C.
I understand that Dr Elliott earned his M.D. at Columbia University.
**would it be A.**

Question

Which sentence is punctuated correctly?	
 
 A.
I understand that Dr. Elliott earned his M.D. at Columbia University.
 
 B.
I understand that Dr, Elliott earned his MD at Columbia University.
 
 C.
I understand that Dr Elliott earned his M.D. at Columbia University.
**would it be A.**

anonymous · Answer

You're correct, it's A. There should be a period after 'Dr.' and in 'M.D'

anonymous · Answer

Yeah ^ he's right

anonymous · Answer

@rainbowsandhappiness  @Dannybrookes  thank you

anonymous · Answer

No problem :)