Add or Subtract as Indicated $\left(3 n^{7}+9 n^{5}+11 n\right)-\left(9 n^{7}-17 n^{5}+4 n\right)$

Multiple Choice

Add or subtract as indicated.
- $\left(3 n^{7}+9 n^{5}+11 n\right) -\left(9 n^{7}-17 n^{5}+4 n\right)$

A) $-6 n^{7}+18 n^{5}+15 n$
B) $27 n^{13}$
C) $-6 n^{7}+26 n^{5}+7 n$
D) $-6 n^{7}+26 n^{5}+15 n$