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: Dental
Colour change in metamorphic calcification 
Select and explain. 
A. Yellowish discoloration, B. Pinkish discoloration, C. Brownish discoloration, D. Greyish discoloration
A: Yellowish discoloration
Answer: A: Yellowish discoloration 
Explanation: None