Given the task definition and input, reply with output. 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'.

Question: What is the cognitive-educational program of Barsky and collaborators for the treatment of hypochondria ?:
Options: <1> In exposing themselves to the vision of photographs or videos about illnesses and visits to patients and hospitals. <2> In learning about the perception of physical symptoms and about the psychological factors that amplify somatic discomfort. <3> In becoming aware of the role of somatic symptoms as mechanisms of manifestation of underlying conflicts. <4> In identifying family functioning patterns that reinforce symptomatic behavior. <5> In repeatedly providing reassuring medical explanations about physical symptoms.
2