<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 46-year-old man presents to the office complaining of dry, irritated eyes that have gotten worse over the last week. The patient states that he has also developed a red bumpy rash on his arms. On exam, his bilateral cornea and conjunctiva are dry and thickened. There are small ulcerations on the cornea. The skin of the bilateral arms has an erythematous rash characterized by small, white raised lesions. The patient has a history of alcoholism but has no other significant past medical history. What is most likely deficient in this patient?? A: Folic acid, B: Vitamin B12, C: Vitamin K, D: Thiamine, E: Vitamin A,  <response>: This is a question about vitamin deficiency based on the patients symptoms. The key symptoms are dry, irritated eyes, corneal ulcerations, and a red bumpy rash on the arms. These are classic symptoms of vitamin A deficiency which can lead to xerophthalmia dry eyes and phrynoderma follicular hyperkeratosis. Vitamin A is essential for maintaining the epithelial tissue of the eyes and skin. The patients history of alcoholism puts him at risk for malnutrition and vitamin deficiencies.E: Vitamin A 