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
If the patient shows tamper tantrum and you send the patient back without any treatment, this is known as: 
Select and explain. 
A. Positive Reinforcer., B. Negative Reinforcer., C. Negative Reinforcement., D. None.
C: Negative Reinforcement.
Answer: C: Negative Reinforcement. 
Explanation: As the condition for the patient shows to escape from the situation.