This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharyngeal Arches, Subject name: Anatomy
Which of the following muscle is derivative of 1st arch: 
Select and explain. 
A. Stylopharyngeus, B. Tensor tympani, C. Platysma, D. Cricothyroid
B: Tensor tympani
Answer: B: Tensor tympani 
Explanation: Tensor tympani muscle develops in the first pharyngeal arch. Stylopharyngeus develops in 3rd arch. Platysma develops in 2nd arch. Cricothyroid develops in 4th arch.