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
Curve of Monson is 
Select and explain. 
A. An anteroposterior curve, B. Is a lateral molar curve with convexity facing downwards, C. Is a lateral premolar curve with convexity facing upwards, D. A reverse curve
B: Is a lateral molar curve with convexity facing downwards
Answer: B: Is a lateral molar curve with convexity facing downwards 
Explanation: None