Which of the coordinate pairs below are separated by a vertical distance of greater than 4 units? Select all that apply.

A) (3.2, -1.5) and (3.2, 3.1)
B) (3.4, 2.1) and (3.4, -1.3)
C) (4.5, 1.9) and (4.5, -2.2)
D) (-3.1, -6.3) and (-3.1, -1.7)