Which of the following sets of numbers has a mode of 13?

3, 5, 5, 7, 7, 9, 15, 15, 19, 21, 23, 25

13, 12, 18, 19 ,13, 21

9, 10, 12, 13, 15, 17 ,17, 19

11, 12 ,13, 14, 15