产程划分中宫颈扩张期属于A.从规律宫缩到宫口开全B.从规律宫缩到宫口开大3cmC.从宫口开大3cm

产程划分中宫颈扩张期属于

A.从规律宫缩到宫口开全

B.从规律宫缩到宫口开大3cm

C.从宫口开大3cm至宫口开全

D.从规律宫缩至胎儿娩出

E.宫口开全至胎儿娩出