Add the Polynomials $$\left( 2 x ^ { 9 } - 6 x ^ { 8 } - 7 x ^ { 7 } - 8 \right) + \left( 4 x ^ { 9 } + 8 x ^ { 8 } + 3 x ^ { 7 } + 4 \right)$$

Add the polynomials. Assume all variable exponents represent whole numbers.
- $$\left( 2 x ^ { 9 } - 6 x ^ { 8 } - 7 x ^ { 7 } - 8 \right) + \left( 4 x ^ { 9 } + 8 x ^ { 8 } + 3 x ^ { 7 } + 4 \right)$$

A) $6 x ^ { 18 } + 2 x ^ { 16 } - 4 x ^ { 14 } - 4$
B) $0 x ^ { 9 } + 0 x ^ { 8 } + 6 x ^ { 7 } - 2$
C) $6 x ^ { 9 } + 2 x ^ { 8 } - 4 x ^ { 7 } - 4$
D) $4 x ^ { 48 } - 4$

Correct Answer:

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