Choose the correct description of the graph of the compound inequality x − 3 < −9 or x + 5 greater than or equal to 10.
a. a number line with an open circle on −6, shading to the left, and a closed circle on 5, shading to the right
b. a number line with a closed circle on −6, shading to the left, and an open circle on 5, shading to the right
c. a number line with an open circle on −6, a closed circle on 5, and shading in between
d. a number line with a closed circle on −6, an open circle on 5, and shading in between

this is the answer solution set: {x|x < 12 or x ≥ 5}, (-∞, 12) or (5, ∞). so which answer choice does this corresponds with above? ?