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: Pharmacology
A topical retinoid recently introduced for the treatment of psoriasis is : 
Select and explain. 
A. Adapalene, B. Tazarotene, C. Alitretinoin, D. Bexarotine
B: Tazarotene
Answer: B: Tazarotene 
Explanation: None