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
Stage 1 cutaneous T cell lymphoma treatment is ? 
Select and explain. 
A. PUVA, B. Biological response modifiers, C. Systemic chemotherapy, D. Extracorporial photopheresis
A: PUVA
Answer: A: PUVA 
Explanation: Ans is 'a' i.e., PUVA