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
Which of the following is an intramatrix procedure? 
Select and explain. 
A. Rotation of mandibular base in relation to cranium, B. Rotation of mandibular plane in relation to cranium, C. Rotation of mandibular plane relative to core of mandible, D. Rotation of mandibular base in relation to maxilla
C: Rotation of mandibular plane relative to core of mandible
Answer: C: Rotation of mandibular plane relative to core of mandible 
Explanation: None