. Which sentence properly combines these two sentences through the use of an appositive?
Dorothy is a colonel in the U.S. Army. Dorothy has received a medal for her service.
A. Dorothy has received a medal for her service as a colonel in the U.S. Army.
B. Dorothy, a colonel in the U.S. Army, has received a medal for her service.
C. Dorothy is a colonel in the U.S. Army, and she has received a medal for her service.
D. The U.S. Army has given Dorothy a medal for her service as a colonel.