What portion of the brain makes contact with the skull in this type of injury

Traumatic brain injuries or concussions are some of the more severe injuries suffered in sports, car accidents, or even a simple fall. What portion of the brain makes contact with the skull in this type of injury, and what neurologic tissue is it? O Cerebral cortex (grey matter) O Cerebral cortex (white matter) O Corpus Collosum (white matter) O Cerebellum (arbor vitae)