An Appropriate Way for the Nurse to Measure a Patient

An appropriate way for the nurse to measure a patient for crutches is to:

A) Have a flexion of 45 degrees at both of the patient's elbows
B) Have a space of two to three fingers between the top of the crutch and the axilla
C) Place the crutch tips 1 foot to each side of the patient's feet, and observe the positioning of the crutches
D) Place the crutch tips 1 foot to the front of the patient's feet, and observe the positioning of the crutches