Add or Subtract as Indicated $\left(6 x^{9}+11 x^{6}-8 x^{2}+8\right)-\left(9 x^{9}-5 x^{5}+4 x^{2}-12\right)$

Multiple Choice

Add or subtract as indicated.
- $\left(6 x^{9}+11 x^{6}-8 x^{2}+8\right) -\left(9 x^{9}-5 x^{5}+4 x^{2}-12\right)$

A) $3 x^{9}+11 x^{6}+5 x^{5}-12 x^{2}+20$
B) $3 x^{9}+11 x^{6}-5 x^{5}-12 x^{2}+20$
C) $-3 x^{9}+11 x^{6}+5 x^{5}-12 x^{2}+20$
D) $-3 x^{9}+11 x^{6}-5 x^{5}-12 x^{2}+20$