【名词&注释】
育龄妇女(reproductive women)、室间隔缺损(ventricular septal defect)、局限性(limitation)、右心室肥大(right ventricular hypertrophy)、病理解剖(pathological anatomy)、肺动脉狭窄(pulmonary stenosis)、右心室肥厚(right ventricular hypertrophy)、肺动脉瓣(pulmonary valve)、肺动脉干(pulmonary trunk)
[单选题]育龄妇女正常子宫内膜厚度的上限值是
A. 14mm
B. 10mm
C. 4mm
D. 20mm
E. 8mm