Why does the equation 9-2x-9-16x=-14x-7-4x-11 have no solutions?

a.) because if you add 18x to both sides of the equation and simplify, you get -18 = -18

b.) because if you add 18x to both sides of the equation and simplify, you get 0= -18

c.) because if you subtract 18x from both sides of the equation and simplify, you get. -18 = -18

d.) because if you subtract 18x from both sides of the equation and simplify, you get 0= -8