<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 42-year-old man comes to the physician because of a 3-week history of rash that began on his right ankle and gradually progressed up his calf. The rash is itchy and mildly painful. He has type 2 diabetes mellitus and hypertension. He does not smoke or drink alcohol. His current medications include metformin, glipizide, and enalapril. He returned from a trip to Nigeria around 5 weeks ago. He works on a fishing trawler. His temperature is 37C 98.6F, pulse is 65min, and blood pressure is 15086 mm Hg. Other than the rash on his calf, the examination shows no abnormalities. A picture of the rash is shown. Which of the following is the most likely cause of this patients symptoms?? A: Contact dermatitis, B: Cutaneous larva migrans, C: Tinea, D: Superficial thrombophlebitis, E: Swimmers itch,  <response>: This is a patient who recently returned from travel to Nigeria and now presents with an itchy and painful rash that started on his right ankle and progressed up his calf. The rash morphology shown is linear and serpiginous. The key aspects to consider are the travel history to Nigeria, the location and progression of the rash from the ankle upward, and the serpiginous morphology. This makes cutaneous larva migrans the most likely diagnosis, as it is caused by hookworm larvae that penetrate the skin, typically the feet, and then migrate in a serpiginous pattern. Contact dermatitis would not have this distinct migratory pattern. Tinea also does not migrate in this way. Superficial thrombophlebitis may be linear but would be more nodular and hottender over the vein. Swimmers itch is unlikely given no recent freshwater exposure.B: Cutaneous larva migrans 