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: Forensic Medicine
Botulinum toxin is used for the treatment of: DNB 08 
Select and explain. 
A. Blepharospasm, B. Risus sardonicus, C. Strabismus, D. All
D: All
Answer: D: All 
Explanation: Ans. All