Consider a neuron in a stable, non-signaling state. The environment inside the cell has a net negative electrical charge relative to the outside, and the concentration of potassium (K+) ions is significantly higher inside the cell than outside. Based on these conditions, which statement best analyzes the two primary forces acting on potassium ions?

A neuron at rest has a high concentration of sodium ions (Na+) outside the cell and a high concentration of potassium ions (K+) inside the cell. The interior of the cell is negatively charged compared to the exterior. Based on this information, which statement best analyzes the combined influence of concentration gradients (diffusion) and electrical forces (electrostatic pressure) on these two ions?