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
Addison's disease is characterized by following except: 
Select and explain. 
A. Hyperkalemia, B. Hypotension, C. Hyponatremia, D. Hypocalcemia
D: Hypocalcemia
Answer: D: Hypocalcemia 
Explanation: Answer is D (Hypocalcemia): Addison's disease may he associated with Hypercakemia and not hypocafremia. In Addison's disease Hypercalcemia occurs in 10-20% of patients due to unclear reasons - Harrison Addison 's disease may be associated with Hyperkalemia, Hvponatremia and hypotension as explained in the previous question.