The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A previously healthy 46-year-old woman comes to the physician because of progressive shortness of breath, fatigue, and chest pain during exercise for the last 6 months. She does not smoke. Her maternal uncle had similar symptoms. Cardiac examination shows wide splitting of S2. The second component of S2 is loud and best heard at the 2nd left intercostal space. The lungs are clear to auscultation. Which of the following is the most likely cause of this patient's cardiac findings?   (A) Increased right ventricular preload   (B) Increased left ventricular preload   (C) Increased right ventricular afterload   (D) Increased left-to-right shunting
['(C) Increased right ventricular afterload <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Increased right ventricular preload \n (B) Increased left ventricular preload \n (C) Increased right ventricular afterload \n (D) Increased left-to-right shunting <> possible answers', "  A previously healthy 46-year-old woman comes to the physician because of progressive shortness of breath, fatigue, and chest pain during exercise for the last 6 months. She does not smoke. Her maternal uncle had similar symptoms. Cardiac examination shows wide splitting of S2. The second component of S2 is loud and best heard at the 2nd left intercostal space. The lungs are clear to auscultation. Which of the following is the most likely cause of this patient's cardiac findings? <> context@"]