Perform the Indicated Operations $$\left( 5 x ^ { 8 } - 4 x ^ { 7 } + 2 x ^ { 6 } + 8 \right) + \left( 7 x ^ { 8 } + 6 x ^ { 7 } + 3 x ^ { 6 } + 4 \right)$$

Multiple Choice

Perform the indicated operations.
- $$\left( 5 x ^ { 8 } - 4 x ^ { 7 } + 2 x ^ { 6 } + 8 \right) + \left( 7 x ^ { 8 } + 6 x ^ { 7 } + 3 x ^ { 6 } + 4 \right)$$

A) $19 ^{ 42} + 12$
B) $x ^ { 8 } + 14 x ^ { 7 } + 9 x ^ { 6 } + 3$
C) $12 x^{16} + 2 x ^{14 }+ 5 x ^ { 12 } + 12$
D) $12 x ^ { 8 } + 2 x ^ { 7 } + 5 x ^ { 6 } + 12$