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
Which one is a contraindication to the use of ergot derivatives - 
Select and explain. 
A. Migraine, B. Hyperprolactinemia, C. Obstructive vascular disease, D. Postpaum hemorrhage
C: Obstructive vascular disease
Answer: C: Obstructive vascular disease 
Explanation: Ans. is 'c' i.e., Obstructive vascular disease