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
All are true for a group discussion except 
Select and explain. 
A. Not a very effective method of health communication, B. Ideally a group should comprise of 6-12 members, C. Can lead to change in health attitudes and behaviour, D. Allows free exchange of ideas and opinions
A: Not a very effective method of health communication
Answer: A: Not a very effective method of health communication 
Explanation: None