It Is Possible That Brain Damage from a Stroke or Other

It is possible that brain damage from a stroke or other injury could leave a person with the ability to comprehend written language but not spoken language (assume the person's hearing is fine) . Which statement best explains this?

A) The ability to understand written language is controlled by the left cerebral hemisphere, whereas the ability to understand spoken language is controlled by the right cerebral hemisphere.
B) Different parts of the brain are involved in different aspects of language comprehension.
C) Different cells of the frontal cortex control different aspects of language comprehension.
D) The same region of the brain controls all aspects of language comprehension.