If Z is the midpoint of what are x, RZ, and RT?
R.______Z._______.T
8x - 10 150

A. x = 18, RZ = 134, and RT = 268
B. x = 22, RZ = 150, and RT = 300
C. x = 20, RZ = 150, and RT = 300
D. x = 20, RZ = 300, and RT = 150