Let f(x) = x².
(A) Graph y = f(x) + k for k = –4, 0, and 2 simultaneously in the same coordinate system. Describe the relationship between the graph of y = f(x) and the graph of y = f(x) + k for any real number k.

(B) Graph y = f(x + h) for h = –4, 0, and 2 simultaneously in the same coordinate system. Describe the relationship between the graph of y = f(x) and the graph of y = f(x + h) for any real number h.