A nurse in an emergency department is providing discharge teaching to a client who has a knee injury and will be using a pair of axillary crutches for the first time. Which of the following instructions should the nurse include?

Hold the crutches on your unaffected side when preparing to sit in a chair

Hold the crutches 9 inches in front and to the side of each foot

Lean on the crutches to support your body weight when standing

Fully extend your arms when holding onto the hand grips