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: Anatomy
Period of embryo is? 
Select and explain. 
A. 4 to 16 weeks, B. Fertilization to 2 weeks, C. 2 to 8 weeks, D. 8 weeks to birth
C: 2 to 8 weeks
Answer: C: 2 to 8 weeks 
Explanation: None