This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Burns, Subject name: Surgery
Intra-aerial calcium gluconate infusion is used in the management of burns caused by 
Select and explain. 
A. Nitric acid, B. Hydrofluoric acid, C. Formic acid, D. Hydrochloric acid
B: Hydrofluoric acid
Answer: B: Hydrofluoric acid 
Explanation: Hydrofluoric acid causes Hypocalcemia. Calcium based therapies are main stay of treating Hydrofluoric acid burns. Topical application of calcium gluconate onto wounds and IV administration of calcium gluconate for systemic symptoms. Intra-aerial calcium gluconate infusion provides effective treatment of progressive tissue injury and intense pain.