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
Injection sclerotherapy is ideal for the following- 
Select and explain. 
A. External haemorrhoids, B. Internal haemorrhoids, C. Posterior resection, D. Local resection
B: Internal haemorrhoids
Answer: B: Internal haemorrhoids 
Explanation: None