Describe how to detect the direct response of the pupil.
A) Put an object (penlight or finger) in front of the patient and slowly move it toward the patient's face
B) Have the patient stare at a light, then have them close their eyes and describe what they see
C) Shine a light into one eye to see how that pupil responds
D) Shine a light in one eye and then see if the other eye responds the same way