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
Addisonian disease is associated with: 
Select and explain. 
A. Low blood pressure and oral pigmentation, B. Oral sores, C. Thyrotoxicosis, D. Keratosis
A: Low blood pressure and oral pigmentation
Answer: A: Low blood pressure and oral pigmentation 
Explanation: None