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: Surgery
All except one are avoided in Raynaud's disease 
Select and explain. 
A. Oral contraceptives, B. ACE - inhibitors, C. Beta - blockers, D. Ergot alkaloids
B: ACE - inhibitors
Answer: B: ACE - inhibitors 
Explanation: ACE - inhibitors are used in treatment of Raynaud's disease.