This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Risk factors for coronary artery disease (CAD) -a) High HDLb) Low LDLc) Increased homocysteine levelsd) Decreased fibrinogen levelse) Increased lipoproeins 
Select and explain. 
A. a, B. b, C. ac, D. ce
D: ce
Answer: D: ce 
Explanation: None