When assessing an unresponsive 20-year-old male with a traumatic brain injury, you note that his left pupil is fully dilated and non-reactive. This indicates injury:
A. to the left cerebral hemisphere.
B. to the right oculomotor nerve.
C. in the region of the cerebellum.
D. to the inferior part of the brainstem.
Answer: A. to the left cerebral hemisphere.
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