Which sentence uses correct capitalization?
A.
After the assembly, the principal of the class, Mr. Fulton, asked the students to calmly leave the auditorium and move into the lunchroom.
B.
After the Assembly, the Principal of the class, Mr. Fulton, asked the students to calmly leave the Auditorium and move into the Lunchroom.
C.
After the Assembly, the principal of the class, Mr. Fulton, asked the students to calmly leave the Auditorium and move into the Lunchroom.
D.
After the assembly, the Principal of the class, Mr. Fulton, asked the students to calmly leave the auditorium and move into the lunchroom.