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: What parasomnia is most common in childhood ?: 
 Options:  <1> Night terrors. <2> Nightmares. <3> REM sleep behavior disorder. <4> Restless legs syndrome. <5> Somnambulism.
