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
Which is true about mucogingival flap designs 
Select and explain. 
A. Flap should be wider at the base, B. Flap should be narrower at the base, C. Flap margins should not rest on bone, D. Mucogingival flaps should be avoided
A: Flap should be wider at the base
Answer: A: Flap should be wider at the base 
Explanation: None