This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
Levosulpiride acts as antagonist of which central dopamine receptor? 
Select and explain. 
A. D2, B. D3, C. D4, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Levosulpiride is claimed to have mood elevating propeies. Levosulpiride is used in the treatment of psychoses, paicularly negative symptoms of schizophrenia, anxiety disorders, dysthymia, veigo, dyspepsia, irritable bowel syndrome and premature ejaculation.