A Protein Is Discovered to Undergo a Reversible Phosphorylation Reaction

A protein is discovered to undergo a reversible phosphorylation reaction in the cell.Scientists do not know whether this phosphorylation has any biological function, but one possibility is that

A) the modification will convert the protein from a cytosolic protein into a membrane-bound protein.
B) the phosphate groups will prevent the protein from denaturing even under high heat or high levels of chemical denaturant.
C) the change will cause the peptide bonds of the protein to weaken and break.
D) the protein will undergo a shape change that will either activate or inhibit its biological activity.
E) the additional phosphate groups will make the protein better able to diffuse through the cell membrane.