What Instructions Does the Nurse Give the Patient Before Using

What instructions does the nurse give the patient before using the Snellen visual acuity chart?

A) "Remove your eyeglasses before attempting to read the lowest line."
B) "Stand 10 feet from the chart and read the first line aloud."
C) "Hold a white card over one eye and read the smallest possible line."
D) "Squint if necessary to improve the ability to read the largest letters."