What are the x-intercept and the y-intercept of this function?

f(x) = 4x + 12

A.
The x-intercept is (3,0), and the y-intercept is (0,-12).
B.
The x-intercept is (-3,0), and the y-intercept is (0,-12).
C.
The x-intercept is (3,0), and the y-intercept is (0,12).
D.
The x-intercept is (-3,0), and the y-intercept is (0,12).