This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of hair, Subject name: Dental
All of the following are used in Alopecia Areata except 
Select and explain. 
A. Tacrolimus, B. Acitretin, C. Steroids, D. Phototherapy
B: Acitretin
Answer: B: Acitretin 
Explanation: Treatment of Alopecia Areata- A) Topical- 1) Steroids 2)Calcineurin Inhibitors - Sirolimus , Tacrolimus 3) Contact irritant/ sensitisers - Dinitrochlorobenzene , Squaric acid dibutyl ether B) Systemic - 1) Steroids - Oral mini pulse given 2 days / week (Betamethasone) 2) Steroid sparing agent - Azathioprine 3) Immunomodulator - Levamisole C) Intralesional - Preferred for single lesion - Triamcinolone -10 mg/ml D) Phototherapy - Used for generalised cases