单项选择题

A.静脉注射定量药物后AUC/口服等量药物后AUC)×100%
B.口服等量药物后AUC/静脉注射定量药物后AUC)×100%
C.口服定量药物后AUC/静脉注射定量药物后AUC)×100%
D.口服一定药物后AUC/静脉注射定量药物后AUC)×100%
E.静脉注射等量药物后AUC/口服定量药物后AUC)×100%