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
Mode Is: 
Select and explain. 
A. Arthimetic average of the values, B. Most frequently occurring observations, C. Middle observation when arranged in ascending or descending order, D. Adding all values and then dividing by number of values
B: Most frequently occurring observations
Answer: B: Most frequently occurring observations 
Explanation: None