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: Surgery
Empyma is a term given for 
Select and explain. 
A. Collection of pus in the tissue spaces, B. Collection of blood in the tissue spaces, C. Collection of air in the tissue spaces, D. Collection of serous fluid in the tissue spaces
A: Collection of pus in the tissue spaces
Answer: A: Collection of pus in the tissue spaces 
Explanation: None