In 1965 a High-School Student, Randy Gardner, Stayed Awake 11

In 1965 a high-school student, Randy Gardner, stayed awake 11 days for a science fair project. What effect did this experience have on him?

A) Gardner suffered from severe visual and auditory hallucinations during the final days of his project.
B) Once he was allowed to sleep, Gardner slept for 5 consecutive days and nights.
C) Gardner suffered permanent intellectual impairment.
D) Gardner suffered no serious psychological consequences.