When Fatty Acid Biosynthesis Is Stimulated, Beta-Oxidation of Fatty Acids

Multiple Choice

When fatty acid biosynthesis is stimulated, beta-oxidation of fatty acids is inhibited. This inhibition occurs mainly because

A) the pool of acetyl-CoA is depleted by the TCA cycle and fatty acid biosynthesis.
B) malonyl-CoA inhibits carnitine acyltransferase I.
C) high levels of ATP inhibit phosphofructokinase.
D) high levels of citrate stimulate acetyl-CoA synthase.
E) none of the above.