The traffic in a highway carpool lane usually moves faster than the traffic in other lanes. For a survey, some drivers were asked how many minutes of driving they saved by using the carpool lane on a usual route. Which of the following factors should not affect the times that are reported? A. the day of the week the drive was taken
B. the time of the drive (such as morning, afternoon, evening)
C. where the drive began and ended
D. the number of people in the car