This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
True about blood pressure measurement is all, except 
Select and explain. 
A. Cuff width should be 40% of arm circumference, B. Diastolic blood pressure is indicated by fouh Korotkoff sound, C. Small cuff measures spuriously elevated Diastolic blood pressure, D. Monkenberg sclerosis causes pseudohypeension
B: Diastolic blood pressure is indicated by fouh Korotkoff sound
Answer: B: Diastolic blood pressure is indicated by fouh Korotkoff sound 
Explanation: In the point at which systolic pressure in the aery just exceeds the cuff pressure, a spu of blood passes through with each heabeat and, synchronously with each beat, a tapping sound is heard below the cuff. The cuff pressure at which the sounds are first heard is the systolic pressure. As the cuff pressure is lowered fuher, the sounds become louder, then dull and muffled. These are the sounds of Korotkoff Ref: Ganong's Review of Medical Physiology Twenty-Third Edition Page No:545