Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: Which glands are located between the skin and the masseter muscle, in front and under the outer ear? 
 Options:  <1> Parotid glands <2> Submandibular glands <3> Sublingual glands <4> Mouth glands <5> Lieberkühn's glands.
