A student walks from school to the LiBrary and back. The expression -|5x-15| represents the distance, in meters, the student is from school after x minutes, where 0≤x≤6. Which statement is true?
1) The student is closest to the school at x = 3 minutes.
2) The student is closest to the school at x = 4 minutes.
3) The student is closest to the school at x = 5 minutes.
4) The student is closest to the school at x = 6 minutes.