In Systematic Desensitization,a Client Who Becomes Anxious While Imagining a Step

In systematic desensitization,a client who becomes anxious while imagining a step in the stimulus hierarchy is:

A) instructed to go back to a prior step
B) told to focus on the nature of the anxiety
C) to remain relaxed and continue to imagine the step until no longer anxious
D) required to reorder the steps in the stimulus hierarchy