Two 4-sided dice. Consider some special 4-sided dice. Roll two of these dice. Let X denote the minimum of the two values that appear, and let Y denote the maximum of the two values that appear. a) Find the joint mass pX, Y(x, y) of X and Y. b) Find the joint CDF FX, Y(x, y) of X and Y. It suffices to give the values FX, Y(x, y) when x and y are integers between 1 and 4. You do not have to list any other values; only these16 possibilities will suffice.