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
Inter globular dentin results due to: 
Select and explain. 
A. Failure of coalescence of calcospherites, B. Fracture of the dentin, C. Artifact in light microscopy, D. Disturbance in dentinal tubules
A: Failure of coalescence of calcospherites
Answer: A: Failure of coalescence of calcospherites 
Explanation: None