Points C and D on the coordinate grid below show the positions of two midfield players of a soccer team:

The coordinate grid is shown from negative 4 to positive 4 on the x-axis and negative 4 to positive 4 on the y-axis. From the origin, point C is 1.5 units to the left and 3 units up. From the origin, point D is 1.5 units to the right and 3 units up.

Which statement best describes the relationship between the positions of the two midfield players?