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
According to Freud's theory, age group of the phallic stage is: 
Select and explain. 
A. 1-2 yrs., B. 2-3 yrs., C. 3-5 yrs., D. 7-10 yrs.
C: 3-5 yrs.
Answer: C: 3-5 yrs. 
Explanation: None