Question

Lights are spaced from the hanging light, 4 feet away in the x-direction and 4 feet in the y-direction. Select the possible coordinates of the anchors for two other lights. (Hint: Use the form (x, y, z) for coordinates.)
a)(7, 8, 10) and (7, 16, 10)
b)(3, 12, 10) and (11, 12, 10)
c)(3, 8, 6) and (11, 16, 14)
d)(3, 8, 10) and (11, 16, 10)

Would it be c?