This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Medicine
A man presents with weakness, pain in upper abdomen, hyperpigmentation, ahritis, hyperglycemia and enlarged palpable liver. Most probable diagnosis is - 
Select and explain. 
A. Haemochromatosis, B. Addison's disease, C. Insulin dependent diabetes mellitus, D. Cushing's syndrome
A: Haemochromatosis
Answer: A: Haemochromatosis 
Explanation: <p>Davidson&;s principles and practice of medicine 22nd edition. #Hemochromatosis is a condition in which amount of total body iron is increases.Excessive iron causes damage to several organs.Fatigue and ahropathy are early symptoms.Leaden Gray skin pigmentatin ,hepatomegaly ,ahritis,diabetes mellitus,cardiac failure are also present.</p>