47.有關HDL3的化學組成，下列何者正確？ (A)triglyceride 75%，cholesterol 7%，protein 5% (B)triglyceride 50%，cholesterol 20%，protein 15% (C)triglyceride 15%，cholesterol 40%，protein 25% (D)triglyceride 3%，cholesterol 17%，protein 55%