请选择CBA0e4q-x9]1C/j){5aThere _________ 20 girls in my class.0B*i.~7`:P2J,C.s*f6H:m9]
A. am0B*i.~7`:P2J,C.s*f6H:m9]
B. is0B*i.~7`:P2J,C.s*f6H:m9]
C. are0B*i.~7`:P2J,C.s*f6H:m9]