PLEASE HELP
If k and r are constants, the graph of y = (x-r)²(x - k)4 does which of the following?

A)Passes through the x-axis at k and 'bounces off' the x-axis at r

B)Bounces off' the x-axis at r and k

C)Passes through the x-axis at r and 'bounces off the x-axis at k

D)Passes through the x-axis at r and k