Which of the Following Describes a Relationship Between Protein/amino Acids

Which of the following describes a relationship between protein/amino acids and heart disease?

A) Substituting soy protein for animal protein raises blood cholesterol levels
B) High blood levels of the amino acid arginine are a risk factor for atherosclerosis
C) High levels of homocysteine in food promote elevation of blood low-density lipoproteins
D) Elevated blood homocysteine levels are associated with smoking cigarettes and drinking alcohol