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: Medicine
Patient with pyloric stenosis secondary to peptic ulcer, complains of profuse vomitting and Na+ - 125 meq/L, K+ → 2.3 meq/L and CI → 85 meq/L, E- 8meq/L should be given- 
Select and explain. 
A. Half normal saline, B. Normal saline, C. K+ bolus, D. Hypertonic saline
B: Normal saline
Answer: B: Normal saline 
Explanation: None