单项选择题

A.臀位,无胎膜破裂
B.初产妇头位,宫口开大3cm未破膜
C.经产妇伴肺动脉高压,宫口开大1cm
D.经产妇头位,宫口开大3cm未破膜
E.初产妇头位,胎膜早破