A. 1.5~2.0kPa(11~15mmHg) B. 2.6~3.5kPa(20~26mmHg) C. 4.0~5.3kPa(30~40mmHg) D. 5.3~6.5kPa(40~49mmHg) E. 6.0~7.3kPa(45~55mmHg)