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
Anaesthetic agent with vasoconstrictor is contraindicated in ? 
Select and explain. 
A. Digital block, B. Spinal block, C. Epidural block, D. Regional anaesthesia
A: Digital block
Answer: A: Digital block 
Explanation: None