Covalent Modification Via Phosphorylation/dephosphorylation of Specific Key Enzymes Modifies Their

Covalent modification via phosphorylation/dephosphorylation of specific key enzymes modifies their catalytic activity, and thus the flux through pathways. Which pathway below is NOT regulated by this strategy?

A) cholesterol synthesis in the liver
B) lipolysis in adipocytes
C) glycogen degradation in skeletal muscle
D) fatty acid synthesis in the liver
E) esterification to form triacylglycerols in the liver