This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid and electrolytes, Subject name: Medicine
Chloride responsive alkalosis, causes are- 
Select and explain. 
A. Severe vomiting, B. Bater's syndrome, C. Milk alkali syndrome, D. Frusemide therapy
A: Severe vomiting
Answer: A: Severe vomiting 
Explanation: Repeat