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
True about 1° teeth: 
Select and explain. 
A. Calcification of 1° teeth is almost complete at birth., B. Calcification of all 1° teeth and permanent incisors is complete at birth., C. Calcification of all permanent teeth starts at birth., D. Calcification of all permanent and primary teeth except 3rd M is completed at birth.
A: Calcification of 1° teeth is almost complete at birth.
Answer: A: Calcification of 1° teeth is almost complete at birth. 
Explanation: Option A is the most appropriate among all the options.