Why Would a Therapist Choose to Prescribe a Walker for Ambulation

Why would a therapist choose to prescribe a walker for ambulation over a quad cane?

A) The walker is best for a patient who doesn't need a great deal of additional stability.
B) The walker works well for negotiating stairs and small spaces in the home.
C) The walker provides the patient with the greatest number of options for gait sequence.
D) The walker provides the widest base of support and most anterior and lateral stability.