Add
- $\left(-2+4 x^{7}+3 x^{9}+2 x^{8}\right)+\left(-9 x^{8}-8 x^{7}+3+5 x^{9}\right)$ A) $-3 x^{48} +1$

Multiple Choice

Add.
- $\left(-2+4 x^{7}+3 x^{9}+2 x^{8}\right) +\left(-9 x^{8}-8 x^{7}+3+5 x^{9}\right)$

A) $-3 x^{48} +1$
B) $8 \mathrm{x}^{18}-7 \mathrm{x}^{16}-4 \mathrm{x}^{14}+1$
C) $8 x^{9}-7 x^{8}-4 x^{7}+1$
D) $-11 x^{9}-11 x^{8}+6 x^{7}+7$