This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Pediatrics
Which among the following is not included in the triad of necrotizing enterocolitis? 
Select and explain. 
A. Thrombocytopenia, B. Metabolic acidosis, C. Hyponatremia, D. Hypokalemia
D: Hypokalemia
Answer: D: Hypokalemia 
Explanation: of stage 3: a) Metabolic acidosis b) Thrombocytopenia c) Hyponatremia