Caroline looked at her watch and saw the bus arriving at 8:10. The next day she arrived at the bus stop late, so she caught the 8:25 bus. The day after she arrived even later and saw that the bus came at 8:40. Which of the following is a reasonable conjecture for Caroline to make about the bus?
A. There is no pattern to the bus schedule.
B. If she were to miss the 8:40 bus, there would be another bus at 8:50
C. The bus arrives every 15 minutes.
D. If she makes the 8:10 bus, the bus she had just missed arrived at 8 o'clock.
