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
A young girl has consumed barium carbonate with suicidal intent. She complains of generalized muscle weakness. The most likely electrolyte is - 
Select and explain. 
A. Hyponatremia, B. Hypocalcemia, C. Hypokalemia, D. Hypomagnesemia
C: Hypokalemia
Answer: C: Hypokalemia 
Explanation: None