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: Phototherapy or light therapy is used for the treatment of: 
 Options:  <1> Crisis of panic. <2> Major depression <3> Bipolar disorder. <4> Post-traumatic stress disorder. <5> Seasonal affective disorder.
