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
All of the following are therapeutic uses of prazosin,except: 
Select and explain. 
A. Peripheral vascular disease, B. Phaeochromocytoma, C. Lupus Erythematosus, D. Scorpion sting
C: Lupus Erythematosus
Answer: C: Lupus Erythematosus 
Explanation: None