Each statement describes a transformation of the graph of y = x. Which statement correctly describes the graph of y = x - 4?

A. It is the graph of y = x translated 4 units to the right.

B. It is the graph of y = x translated 4 units to the left.

C. It is the graph of y = x translated 4 units up.

D. It is the graph of y = x where the slope is decreased by 4.