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: Pharmacology
Lorcaserin is: 
Select and explain. 
A. 5HT1A agonist, B. 5HT2agonist, C. 5HT2 antagonist, D. 5HT3 antagonist
B: 5HT2agonist
Answer: B: 5HT2agonist 
Explanation: Lorcaserin  is a 5HT2 agonist used in the treatment of obesity.