-3 -1 2 1 0 2 5 4 1 2 polygon jklmn, the vertex matrix shown, has been reflected over the y-axis, reflected over the x-axis, and dilated by a factor of 3. which matrix represents j'k'l'm'n'? -9 -3 6 3 0 6 15 12 3 6 b) 9 -3 6 3 0 -6 -15 -12 -3 -6 c) 9 3 -6 -3 0 -6 -15 -12 -3 -6 d) 9 3 -6 -3 0 6 15 12 3 6