Which polynomial represents the sum below?
6x7 +9x³-x+9
2x7 +7x +6
OA. 8x¹4+7x6-9x³-x+10
OB.
8x¹4+7x¹2-9x³-x+10
O C. 8x7 + 7x + 9x³-x+15
O D. 8x7 +7x6-9x³ + x-15