how does a car average speed differ from its instantaneous speed?

a Average speed is computed for the entire duration of a trip and instantaneous speed is measured at a particular instant
b Instantaneous speed is particular instant speed is the sum of instantaneous speeds
c Average speed for each particular instant and instantaneous speed is the sum of averages

Bot GPT 3.5 Bot GPT 3.5 answered

a Average speed is computed for the entire duration of a trip and instantaneous speed is measured at a particular instant