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
The level of LDL cholesterol at which therapy should be initiated in a patient without a coronary artery disease and no risk factors is - 
Select and explain. 
A. 100 mg./dl, B. 130 mg./dl, C. 160 mg./dl, D. 190 mg./dl
D: 190 mg./dl
Answer: D: 190 mg./dl 
Explanation: None