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: Forensic Medicine
Ist molar tooth appears at age of ? 
Select and explain. 
A. 6 - 7 months, B. 8 - 9 months, C. 10-11 months, D. 12 - 13 months
D: 12 - 13 months
Answer: D: 12 - 13 months 
Explanation: Ans. is 'd' i.e., 12 - 13 months