In Desensitization, a Person

In desensitization, a person

A) constructs a hierarchy, is taught exercises that produce deep relaxation, and then tries to perform the least disturbing item on the list.
B) is taught exercises that produce deep relaxation and then is exposed to the highest fear-producing stimulus.
C) attempts to discover the reasons why she/he is fearful of a particular stimuli and then to face these fears one by one.
D) is exposed to response-contingent shocks whenever they try to engage in a bad habit, such as smoking or drinking alcohol.