This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Isolated systolic hypeension is defined as: 
Select and explain. 
A. SBP>140, DBP<90, B. SBP>140, DBP<80, C. SBP>150, DBP<90, D. SBP>150, DBP<90
A: SBP>140, DBP<90
Answer: A: SBP>140, DBP<90 
Explanation: Isolated systolic hypeension is defined as systolic BP greater than 140 and diastolic BP less than 90. Ref: Park 21st edition, page 344.