Which of the following circles have their centers on the x-axis?
Check all that apply.
A. (x-0)2 + (y-3)2 = 23
B. (x - 2)2 + (y+3)2 = 2
C. (x-4)2 + (y-0)2 = 74
D. (x-0)2 + (y=0)2 = 72