Suppose you're taking a long road trip with a few friends. You ask one friend a question, but the other friend, who you thought was asleep, responds to you. Based on your understanding of consciousness, the most reasonable explanation is that the other friend

A. was actually meditating.

B. has the unusual ability to fully understand information while unconscious.

C. happened to say something that appeared to be on-topic.

D. was barely in the first stage of sleep.