This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of skin, Subject name: Dental
Alopecia aerata is - 
Select and explain. 
A. Cicatricial scar, B. Non cicatricial scar, C. Fungal infection, D. None
B: Non cicatricial scar
Answer: B: Non cicatricial scar 
Explanation: Alopecia areata is a non scarring inflammatory condition characterized by patchy hair loss Ref Harrison20th edition pg 1208