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: Orthopaedics
Fluid accumulation in knee joint to elicit Bulge sign is 
Select and explain. 
A. 15 ml, B. 30 ml, C. 45 ml, D. 100 ml
A: 15 ml
Answer: A: 15 ml 
Explanation: None