Identify the like terms in the expression below.
2x - 3y + 4y - 8 + 8y
2x, -3y, 4y, -8, 8y
-3y, 4y, 8y
3y, 4y, 8y
-2x, -3y, 4y, 8y
2x - 3y + 4y - 8 + 8y
2x, -3y, 4y, -8, 8y
-3y, 4y, 8y
3y, 4y, 8y
-2x, -3y, 4y, 8y