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
Calcium content of lamina dura is: 
Select and explain. 
A. More than the other parts of alveolar bone, B. Less than the other parts of alveolar bone, C. Same as in other parts of alveolar bone, D. Less than the cementum
A: More than the other parts of alveolar bone
Answer: A: More than the other parts of alveolar bone 
Explanation: None