A Type of Transport Protein Found in the Plasma Membrane

A type of transport protein found in the plasma membrane of cells lining the inside of the intestine allows sodium ions to diffuse down their concentration gradient. The ions movethrough the transport protein, and into the cell. These transport proteins will use the kinetic energy of the diffusing sodium ions to bring glucose into the cells as well. Which of thefollowing would stop transport of glucose through this transport protein?

A) Stopping the activity of the sodium potassium pump.
B) Increasing the number of digestive enzymes in the digestive tract.
C) Lowering the energy of activation.
D) Increasing the concentration of glucose outside of the cell.