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
The drug possessing antagonistic action at histamine, serotonin and muscarinic receptors is : 
Select and explain. 
A. Promethazine, B. Terfenadine, C. Cyproheptadine, D. Hydroxyzine
C: Cyproheptadine
Answer: C: Cyproheptadine 
Explanation: None