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
Philtrum of upper tip is derived from 
Select and explain. 
A. Maxillary prominence, B. Mandibular prominence, C. Medial nasal process, D. Lateral nasal process
C: Medial nasal process
Answer: C: Medial nasal process 
Explanation: None