This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Congenital hyperophic pyloric stenosis associated with 
Select and explain. 
A. Hypokalemic acidosis, B. Hypokalemic alkalosis, C. Hyperkalemic acidosis, D. Hyperkalemic alkalosis
B: Hypokalemic alkalosis
Answer: B: Hypokalemic alkalosis 
Explanation: Due to electrolyte changes because of vomiting, hypochloremic, hyponatremic, hypokalemic, hypocalcemic, hypomagnesemic alkalosis occurs with paradoxical aciduria. Reference: SRB 5th edition page no. 829