This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Venous Disorders, Subject name: Surgery
Harvey's sign is:- 
Select and explain. 
A. Transmitted pressure wave on coughing in a various vein, B. Related to the use of venous filling after emptying a length of vein, C. Loss of hairs from eyebrows, D. None of the above
B: Related to the use of venous filling after emptying a length of vein
Answer: B: Related to the use of venous filling after emptying a length of vein 
Explanation: Harvey's sign Related to the use of venous filling after emptying a length of vein Delayed venous refilling is called Harvey's sign