A nurse provides teaching to a client who is being fitted for a prosthetic leg. Which of the following statements indicate to the nurse a need for further instruction?

A. Daily exercise of the residual limb is important to maintain strength and prepare for prosthesis use. B. Wearing a sock over the residual limb is correct to ensure proper fit and comfort. C. Elastic bandages are used appropriately to shape and shrink the residual limb for prosthetic fitting. D. Relying solely on balancing on one leg instead of using crutches is unsafe and indicates a need for further instruction.