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
Which is NOT a clinical feature of Addison's disease: 
Select and explain. 
A. Hypoglycemia, B. Hypoglycemia, C. Hypocalcemia, D. Hyperkalemia
C: Hypocalcemia
Answer: C: Hypocalcemia 
Explanation: Answer is C (Hypocalcemia): Addison's disease is associated with Hypercalcemia and not Hypocalcemia