<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 48-year-old woman comes to the emergency department because of a photosensitive blistering rash on her hands, forearms, and face for 3 weeks. The lesions are not itchy. She has also noticed that her urine has been dark brown in color recently. Twenty years ago, she was successfully treated for Coats disease of the retina via retinal sclerotherapy. She is currently on hormonal replacement therapy for perimenopausal symptoms. Her aunt and sister have a history of a similar skin lesions. Examination shows multiple fluid-filled blisters and oozing erosions on the forearms, dorsal side of both hands, and forehead. There is hyperpigmented scarring and patches of bald skin along the sides of the blisters. Laboratory studies show a normal serum ferritin concentration. Which of the following is the most appropriate next step in management to induce remission in this patient?? A: Pursue liver transplantation, B: Begin oral thalidomide therapy, C: Begin phlebotomy therapy, D: Begin oral hydroxychloroquine therapy, E: Begin subcutaneous deferoxamine therapy,  <response>: This is a question about porphyria cutanea tarda PCT, a disorder of heme biosynthesis that causes photosensitive skin lesions and dark urine due to excess porphyrins. The history of retinal sclerotherapy for Coats disease is a clue, as this can precipitate PCT. The family history also supports PCT. Normal serum ferritin makes hemochromatosis unlikely. The next step in managing PCT is to reduce iron levels, as this can help suppress porphyrin production. The choices include medications like thalidomide and hydroxychloroquine that are sometimes used in PCT, but phlebotomy is the most direct way to lower iron levels and induce remission. Liver transplantation and deferoxamine are not indicated.C: Begin phlebotomy therapy 