This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Which of the following muscle is derived from the 1st arch? 
Select and explain. 
A. Stylopharyngeus, B. Tensor tympani, C. Platysma, D. Cricothyroid
B: Tensor tympani
Answer: B: Tensor tympani 
Explanation: Human embryology Tenth edition Inderbier Singh Page no 132 First arch: medial and lateral pterygoid, masseter, temporalis, tensor tympani, tensorpalati