This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacotherapy In Psychiatry, Subject name: Psychiatry
A 50 year old woman with schizophrenia who has been taking a antipsychotic drug for the past 3 years has begun to show involuntary chewing and lip-smacking movements. Which can be the most likely possibility? 
Select and explain. 
A. Akathisia, B. Neuroleptic Malignant Syndrome, C. Restless Legs Syndrome, D. Tardive Dyskinesia
D: Tardive Dyskinesia
Answer: D: Tardive Dyskinesia 
Explanation: Ans. D. Tardive dyskinesiaTardive dyskinesia (TD) is a disorder that results in involuntary, repetitive body movements. This may include grimacing, sticking out the tongue, or smacking the lips.Additionally, there may be rapid jerking movements or slow writhing movements