Which statement about the binomial expansion of (x2 - x) 9 is true?

The expansion of the

(x2 - x) ^9 = x^18 - 9x^17 + 36x^16 - 84x^15 + 126^14 - 126x^13 + 84x^12 - 36x^11 + 9x^10 - x^9

Base from the expansion

The first term is x^18

Second term - 9x^17

Third term 36x^16

Last term is - x^9