This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Pathology
Which among the following ions is impoant in irreversible cell injury? 
Select and explain. 
A. Calcium, B. Sodium, C. Potassium, D. Chloride
A: Calcium
Answer: A: Calcium 
Explanation: Irreversible cell injury damages the plasma membrane, which then fails to maintain the energy dependent Calcium pumps, allowing theinflux of calciuminto the cell.