请选择CBA3I4K7N3F8D5I+b I _______ in Class 5. Ben _______ in Class 5, too. We_______ classmates.6T2J,f;z.D
A. is, am, are6T2J,f;z.D
B. am, is, are6T2J,f;z.D
C. are, is, am6T2J,f;z.D