请选择ABC2C:^,`'\+`*@,P -Good morning. Can I help you? -________(~)z.f)T+v-y9P5y
A. Yes, I can.(~)z.f)T+v-y9P5y
B.A pen, please.(~)z.f)T+v-y9P5y
C. Thanks.(~)z.f)T+v-y9P5y