<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 34-year-old man comes to the physician because of increasing lower back and neck pain for the past 7 months. The pain is worse in the morning and improves when he plays basketball. He has noticed shortness of breath while playing for the past 2 months. He is sexually active with 2 female partners and uses condoms inconsistently. He appears lethargic. His vital signs are within normal limits. Examination of the back shows tenderness over the sacroiliac joints. Range of motion is limited. The lungs are clear to auscultation. Chest expansion is decreased on full inspiration. His leukocyte count is 14,000mm3 and erythrocyte sedimentation rate is 84 mmh. An x-ray of the spine shows erosion and sclerosis of the sacroiliac joints and loss of spinal lordosis. Further evaluation of this patient is most likely to show which of the following?? A: Paresthesia over the anterolateral part of the thigh, B: Nail pitting and separation of the nail from the nailbed, C: Tenderness at the Achilles tendon insertion site, D: Ulnar deviation of the fingers bilaterally, E: Erythema and inflammation of the conjunctiva,  <response>: This is a patient with chronic back and neck pain that is worse in the morning and improves with activity, along with shortness of breath and fatigue. The physical exam shows sacroiliac joint tenderness, decreased chest expansion, and abnormal inflammatory markers. X-ray shows sacroiliitis and loss of lumbar lordosis. This clinical presentation is most consistent with ankylosing spondylitis, a type of inflammatory arthritis that primarily affects the spine and sacroiliac joints. The imaging findings of sacroiliitis and loss of lumbar lordosis support this diagnosis. The right answer will be a finding that is associated with ankylosing spondylitis.C: Tenderness at the Achilles tendon insertion site 