老年人中、重度高血压进行降压治疗时，血压值降至以下哪项即可
A16/10.7kPa(120/80mmHg)
B20/12kPa(140/90mmHg)
C21.3/12.7kPa(160/95mmHg)
D14.7/9.3kPa(110/70mmHg)
E20.6/12kPa(150/90mmHg)
A16/10.7kPa(120/80mmHg)
B20/12kPa(140/90mmHg)
C21.3/12.7kPa(160/95mmHg)
D14.7/9.3kPa(110/70mmHg)
E20.6/12kPa(150/90mmHg)