4 number lines going from negative 8 to positive 8. Graph A has an open circle at negative 4 with everything shaded to the right of the circle. Graph B has an open circle at negative 6 with everything shaded to the right. Graph C has an open circle at 6 with everything shaded to the left. Graph D has an open circle at 4 with everything shaded to the left. Isolate the variable to solve 4x + 4 > –20. Which number line shows the solution set?