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: Anatomy
Platysma 
Select and explain. 
A. Compresses the cheeks, B. Draws the angles of mouth downwards, C. Elevates the mandible, D. Helps in mastication
B: Draws the angles of mouth downwards
Answer: B: Draws the angles of mouth downwards 
Explanation: None