Assume that x and y represent Boolean variables. What values of the Boolean variables x and y satisfy: x(x + y) = yx a. (0,0) only b. (1,1) only c. (0,0) and (1,1) only d. (0,0), (1,0), and (1,1) but not (0, 1) e. (0,0), (0,1), and (1,1) but not (1, 0) Solution d. (0,0), (1,0), and (1,1) but not (0, 1).