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
All of the following are ergot alkaloids except ? 
Select and explain. 
A. Ergometrine, B. Ergotoxine, C. Methysergide, D. Ketanserine
D: Ketanserine
Answer: D: Ketanserine 
Explanation: Ans. is 'd' i.e., Ketanserine Clinically impoant ergot alkaloides are Ergometrine 3. Ergotoxin 5. Dihydroergotamine 7. Methysergide Ergotamine 4. Dihydroergotoxin 6. Bromocriptine