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: Dental
A pulp polyp may arise in connection with: 
Select and explain. 
A. Chronic open pulpitis, B. Pulp necrosis, C. Acute pulpitis, D. Chronic Periapical lesion
A: Chronic open pulpitis
Answer: A: Chronic open pulpitis 
Explanation: None