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
Tall T waves on ECG are seen in: 
Select and explain. 
A. Hyperkalemia, B. Hypokalemia, C. Hypercalcemia, D. Hypocalcemia
A: Hyperkalemia
Answer: A: Hyperkalemia 
Explanation: Answer is A (Hyperkalemia) Hyperkalemia is typically associated with Tall peaked narrow based frnted T wave.