<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 62-year-old man comes to the physician because of painless swelling in his left foot for 4 months. The swelling was initially accompanied by redness, which has since resolved. He has not had fever or chills. He has a history of coronary artery disease, hyperlipidemia, and type 2 diabetes mellitus. He has had 3 sexual partners over the past year and uses condoms inconsistently. His mother had rheumatoid arthritis. Current medications include clopidogrel, aspirin, metoprolol, losartan, atorvastatin, and insulin. He is 180 cm 5 ft 11 in tall and weighs 95 kg 209 lb; BMI is 29 kgm2. Vital signs are within normal limits. Cardiovascular examination shows no abnormalities. Examination of the feet shows swelling of the left ankle with collapse of the midfoot arch and prominent malleoli. There is no redness or warmth. There is a small, dry ulcer on the left plantar surface of the 2nd metatarsal. Monofilament testing shows decreased sensation along both feet up to the shins bilaterally. His gait is normal. Which of the following is the most likely diagnosis?? A: Rheumatoid arthritis, B: Calcium pyrophosphate arthropathy, C: Tertiary syphilis, D: Reactive arthritis, E: Diabetic arthropathy,  <response>: This is a clinical vignette describing a 62-year-old man with a 4 month history of painless swelling in his left foot. Key findings include:- Swelling initially accompanied by redness now resolved- No fever or chills- Past medical history of CAD, hyperlipidemia, type 2 diabetes- Mother with rheumatoid arthritis- Physical exam showing swelling of left ankle, collapsed midfoot arch, prominent malleoli, small dry ulcer on left 2nd metatarsal, decreased sensation in feet bilaterally, normal gait- Risk factors: Multiple sexual partners, inconsistent condom useBased on the chronic swelling, history of diabetes, insensate feet, and ulceration, this is most consistent with diabetic arthropathy diabetic Charcot foot. The collapsed arch and prominent malleoli indicate midfoot collapse characteristic of Charcot arthropathy. While rheumatoid arthritis, calcium pyrophosphate deposition disease, and reactive arthritis can cause foot swelling, the exam and history are not consistent with these. Syphilis would not explain the chronic swelling or midfoot changes.E: Diabetic arthropathy 