Ian Suddenly Became Incoherent at 3 A

Multiple Choice

Ian suddenly became incoherent at 3 a.m. yesterday. He was agitated and unable to focus his attention and did not know where he was when taken to the hospital. After two days, the cocaine was out of his system and his cognitive functioning returned to normal. What form of neurocognitive disorder did he display?

A) none; he was experiencing withdrawal
B) minor neurocognitive disorder
C) delirium
D) traumatic brain injury