请选择DCBA:D1o,^There is ______ “s” and _______ “u” in the word “use”.5].q6j6w2N._*a9d7L-B
A. a; a5].q6j6w2N._*a9d7L-B
B. a; an5].q6j6w2N._*a9d7L-B
C. an; a5].q6j6w2N._*a9d7L-B
D. an; an5].q6j6w2N._*a9d7L-B