<prompt> A 69-year-old man develops clubbing of his fingers. Which of the following is most likely associated with this condition?RFaortic stenosisperiosteal inflammationcrystal-induced arthritis  <response>: Mononuclear cell infiltration and edema develop in the periosteum, synovial membrane, and joint capsule. Secondary hypertrophic osteoarthropathy HOA e.g., lung cancer is more common than primary HOA. 