The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 23-year-old woman comes to the physician because she is embarrassed about the appearance of her nails. She has no history of serious illness and takes no medications. She appears well. A photograph of the nails is shown. Which of the following additional findings is most likely in this patient?   (A) Silvery plaques on extensor surfaces   (B) Flesh-colored papules in the lumbosacral region   (C) Erosions of the dental enamel   (D) Holosystolic murmur at the left lower sternal border
['(A) Silvery plaques on extensor surfaces <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Silvery plaques on extensor surfaces \n (B) Flesh-colored papules in the lumbosacral region \n (C) Erosions of the dental enamel \n (D) Holosystolic murmur at the left lower sternal border <> possible answers', '  A 23-year-old woman comes to the physician because she is embarrassed about the appearance of her nails. She has no history of serious illness and takes no medications. She appears well. A photograph of the nails is shown. Which of the following additional findings is most likely in this patient? <> context@']