A Patient Is Learning to Use Crutches on the Stairs

A patient is learning to use crutches on the stairs.Which action indicates that the patient needs further instruction?

A) The patient places the good leg on the step to be climbed first.
B) The patient places the affected leg on the step to be climbed first.
C) The patient places the crutches on the floor and uses a swing-through method to get to the next step.
D) The patient places the crutch on the affected side on the next step first.