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
If solid line represent the rigid height, then the following diagram with excessive inter arch space is classified in? 
Select and explain. 
A. Class - 1, B. Class - 2, C. Class - 3, D. Class - 4
B: Class - 2
Answer: B: Class - 2 
Explanation: None