单项选择题

A1/A2型题 不去蛋白的碱性苦味酸两点动力学法测定血肌酐时,应准确地读取反应后哪两个时间点的吸光度()

A.10s和20s
B.20s和80s
C.60s和120s
D.20s和100s
E.60s和100s