QRS波群时间的正常值是A.0.32～0.44sB.0.06～0.10sC.0.12～0.20sD.0.04～0.11sE.0.36～0.41s

QRS波群时间的正常值是

A.0.32～0.44s

B.0.06～0.10s

C.0.12～0.20s

D.0.04～0.11s

E.0.36～0.41s

请帮忙给出正确答案和分析，谢谢！