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: Pathology
Non disjunction of chromosome occurs in which
stage 
Select and explain. 
A. Prophase, B. Metaphase, C. Anaphase, D. Telophase
C: Anaphase
Answer: C: Anaphase 
Explanation: None