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: Skin
A flat discolouration on skin as 1 cm is called : 
Select and explain. 
A. Macule, B. Plague, C. Boil, D. Papule
A: Macule
Answer: A: Macule 
Explanation: A. i.e. Macule