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: Pathology
Cleft lip is due to failure of fusion between? 
Select and explain. 
A. Median nasal process and maxillary process, B. Median nasal process and mandibular process, C. Lateral nasal process and maxillary process, D. Lateral nasal processes of both sides
A: Median nasal process and maxillary process
Answer: A: Median nasal process and maxillary process 
Explanation: None