Sammy Was Brought to the Hospital Because He Had Been

Sammy was brought to the hospital because he had been exhibiting some strange behaviours and recently stated he had been hearing voices. When the doctor met him, Sammy was talking in nonsensical sentences and had a very hard time following the doctor's simple directions. In addition, the doctor noticed his hair was uncombed and he wore dirty, mismatching clothes. The doctor took notes about all of these details of Sammy's behaviour and appearance. The doctor was performing:

A) a subjective, personal assessment
B) a mental status exam
C) something doctors call the "quick-check" approach
D) structured behavioural assessment