Find the Sum of the Polynomials $\begin{array} { r } 6 x ^ { 2 } + 7 x - 2 \\7 x ^ { 2 } + 2 x - 2 \\- 6 x - 2 \\\hline\end{array}$

Multiple Choice

Find the sum of the polynomials. $\begin{array} { r } 6 x ^ { 2 } + 7 x - 2 \\7 x ^ { 2 } + 2 x - 2 \\- 6 x - 2 \\\hline\end{array}$

A) $13 x ^ { 4 } + 3 x ^ { 2 } - 6$
B) $13 x ^ { 2 } + 3 x - 2$
C) $16 x ^ { 7 } - 6$
D) $13 x ^ { 4 } + 3 x ^ { 2 } - 2$
E) $13 x ^ { 2 } + 3 x - 6$