What is the difference between person deixis and time deixis?

A. Person deixis indicates participants in a conversation, while time deixis indicates the timing of events.

B. Person deixis is about the past, while time deixis is about the future.

C. Person deixis indicates the mood of the conversation, while time deixis indicates the tone of the speaker.

D. Person deixis refers to the location of events, while time deixis refers to the participants.