You are answering a USMLE-style medical question. Question: A 9-year-old male visited his primary care physician for a check-up three months after a throat infection. Upon examination, the patient exhibits painless subcutaneous nodules on the back of the wrist, the outside elbow, and the front of the knees, as well as inflammation in the joints of the lower extremities. Which of the following symptoms is most likely to also be present in this patient? Options: A) Renal failure B) Hepatomegaly C) Chorea D) Pleural effusion Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.