以下对于华为Probe&Asisstant软件侧掉话率公式定义正确的是_____
A.Call Drop Rate=eRAB Abnorm Rel/eRAB Setup Success*100%
B.Call Drop Rate=eRAB Abnorm Rel/RRC Connection Setup Success*100%
C.Call Drop Rate=eRAB Abnorm Rel/eRAB Release Total*100%
D.Call Drop Rate=eRAB Abnorm Rel/eRAB NormRel*100%
正确答案是A