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: Pathology
A tooth with a 3 month history of pain, which was worse when hot liquid were in mouth. After extraction, the tooth was split open. The pulp chamber was completely filled with pus. A few remnants of pulp tissue were found in apical end. The condition is: 
Select and explain. 
A. Acute partial pulpits, B. Acute total pulpits, C. Suppurative pulpitis, D. Strangulation of pulp
C: Suppurative pulpitis
Answer: C: Suppurative pulpitis 
Explanation: None