Janet Told Her Colleagues That,last Night at a Concert,a Person

Janet told her colleagues that,last night at a concert,a person near her had blackout.Which of the following describes what Janet witnessed?

A) The individual could only partially recall events that occurred during a drinking occasion.
B) The individual could not recall events that occurred during a drinking occasion.
C) The individual lost consciousness.
D) The individual suffered amnesia for long-past events.