Phineas Gage tragically had a tamping iron propelled through his head. Both left and right sides of the prefrontal cortex were severely damaged. As a result of the accident, Phineas Gage ____.

a. died from his injuries.
b. suffered loss of his arms and legs.
c. lost his sense of hearing.
d. suffered a change in personality.
e. suffered complex seizures for the rest of his life.