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 cephalometric point can be altered by orthodontic tooth movement? 
Select and explain. 
A. Point-A, B. ANS, C. Nasion, D. Gonion
A: Point-A
Answer: A: Point-A 
Explanation: Subspinale ("A" Point)
The most posterior point on the curve between ANS and PR (SPr).
"A" point is usually found 2 mm anterior to the apices of the maxillary central incisor root.