<prompt> A 49-year-old man has his serum lipids measured. Which pattern suggests the lowest risk for CAD?total cholesterol 215 mgdL, high-density lipoprotein HDL cholesterol 28 mgdLtotal cholesterol 215 mgdL, HDL cholesterol 43 mgdLtotal cholesterol 180 mgdL, HDL cholesterol 29 mgdLtotal cholesterol 202 mgdL, HDL cholesterol 45 mgdL  <response>: This combination, although the total cholesterol is borderline, has high HDL cholesterol, which is protective. Nevertheless, a level this high would likely require treatment. 