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: Social & Preventive Medicine
A group of expes discussing and interacting about a paicular topic in presence of audience is: 
Select and explain. 
A. Symposium, B. Workshop, C. Seminar, D. Panel discussion
D: Panel discussion
Answer: D: Panel discussion 
Explanation: Panel discussion