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
A 45 year old female patient returns to your clinic with complaints of food lodgement in interproximal area of 47. On intraoral examination, 47 is restored with mesio-disto-occlusal amalgam restoration. How many point angles and line angles are there in this preparation? 
Select and explain. 
A. 4 and 8, B. 6 and 8, C. 6 and 14, D. 8 and 14
D: 8 and 14
Answer: D: 8 and 14 
Explanation: None