This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
All of the following muscles are derived from second branchial arch except: 
Select and explain. 
A. Posterior belly of digastric, B. Anterior belly of digastric, C. Stapedius, D. Orbicularis oculi
B: Anterior belly of digastric
Answer: B: Anterior belly of digastric 
Explanation: All muscles derived from the second arch are supplied by CN VII. They include stapedius, posterior belly of digastric, stylohyoid, auricular muscles (anterior, superior and posterior) and all mimetic muscles of face including buccinator. Anterior belly of digastric is innervated by trigeminal (V3 division) nerve.