【名词&注释】
皮脂腺囊肿(sebaceous cyst)、合并症(complication)、肝肾阴虚型(kidney and liver yin deficiency type)、激光治疗(laser therapy)、口腔癌(oral cancer)、单纯性(simple)、性高血压(hypertension)、早期临床表现(early clinical manifestation)、始基囊肿(primordial cyst)
[单选题]单纯性高血压(hypertension),无其他合并症,血压高于多少时应暂缓拔牙( )
A. 18.3/12kPa(140/90mmHg)
B. 21.3/12.7kPa(160/95mmHg)
C. 22.7/12.7kPa(170/95mmHg)
D. 24/13.3kPa(180/100mmHg)
E. 25.3/13.3kPa(190/100mmHg)