This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Name the technique which usually involves teaching the patient how to induce a state of deep muscle relaxation and describing imaginary scenes relevant to his fear: 
Select and explain. 
A. Desensitization, B. Contingency management, C. Hypnosis, D. None
A: Desensitization
Answer: A: Desensitization 
Explanation: Desensitization: The technique usually involves teaching the patient how to induce a state of deep muscle relaxation and describing imaginary scenes relevant to his fear.
Indications of desensitization are:

Child's initial visit.
At subsequent appointments when introducing dental procedures which are new to the patient.
When treating referral patients.