This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
All are derivatives of first pharyngeal arch except 
Select and explain. 
A. Mylohyoid, B. Tensor tympani, C. Tensor veli palatini, D. Stylopharyngeus
D: Stylopharyngeus
Answer: D: Stylopharyngeus 
Explanation: Derivatives of the first pharyngeal arch aremuscles of mastication (chewing)massetermedial and lateral pterygoid musclestemporalismylohyoid muscledigastric muscle, anterior bellytensor veli palatini muscletensor tympani muscleStylopharyngeus belong to 3rd arch