A schizophrenic patient hears people only when he is about to fall asleep. What is the most likely diagnosis?

The key is B. Hypnogogic hallucinations. [Hypnagogic or hypnopompic hallucinations are visual,

tactile, auditory, or other sensory events, usually brief but occasionally prolonged, that occur at the

transition from wakefulness to sleep (hypnagogic) or from sleep to wakefulness (hypnopompic).