In which revision of this sentence are commas used correctly?
Mr. Rodriguez is one of the most, popular teachers at my school but he soon will move to Phoenix Arizona.
A. Mr. Rodriguez, is one of the most popular teachers at my school, but he soon will move to Phoenix Arizona.
B. Mr. Rodriguez is one of the most popular teachers at my school, but he soon will move to Phoenix, Arizona.
C. Mr. Rodriguez is one of the most popular teachers at my school, but, he soon will move to Phoenix, Arizona.
D. Mr. Rodriguez is one of the most, popular teachers at my school but he soon will move, to Phoenix Arizona.