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
The primary lateral incisors begin to calcify about
the: 
Select and explain. 
A. 4th month of life, B. 4th month in utero, C. 41/2 month in utero, D. 5th month in utero
C: 41/2 month in utero
Answer: C: 41/2 month in utero 
Explanation: None