下面选项中,哪句英语表达是询问地铁出口的句子____。
A: WhichstopshouldIgetoffat?
B: WhichexitshouldItake?
C: Whereistheentrancetothesubway?
D: Whereistheplatformforline4?
A: WhichstopshouldIgetoffat?
B: WhichexitshouldItake?
C: Whereistheentrancetothesubway?
D: Whereistheplatformforline4?