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: Pathology
Bismuth intoxication is manifested as 
Select and explain. 
A. pigmentation in areas of inflammation, B. Burtonian line, C. Gingiva, D. Blackish line in the mucosa
A: pigmentation in areas of inflammation
Answer: A: pigmentation in areas of inflammation 
Explanation: None