In an Assessment of the Level of Consciousness of a Patient

In an assessment of the level of consciousness of a patient who does not respond to environmental stimuli such as noise,the proper sequence to follow is to next assess the patient's response to

A) light touch, verbal stimuli, and then painful stimuli.
B) verbal stimuli, light touch, and then painful stimuli.
C) pressure to a nail bed of each extremity, pinching the trapezius muscle, and pressure applied to the supraorbital ridge or manubrium.
D) gentle shaking, shining a light in the patient's eyes, and then painful stimuli.