Remove the Parentheses by Multiplying and Then Simplify by Combining $8 x \left( x ^ { 2 } - 2 x - 8 \right) + x \left( 3 x ^ { 2 } + 8 x - 7 \right)$

Multiple Choice

Remove the parentheses by multiplying and then simplify by combining similar terms. $8 x \left( x ^ { 2 } - 2 x - 8 \right) + x \left( 3 x ^ { 2 } + 8 x - 7 \right)$

A) $11 x ^ { 3 } - 8 x ^ { 2 } - 73 x$
B) $12 x ^ { 3 } - 8 x ^ { 2 } - 71 x$
C) $11 x ^ { 3 } - 10 x ^ { 2 } - 72 x$
D) $12 x ^ { 3 } - 10 x ^ { 2 } - 71 x$
E) $11 x ^ { 3 } - 8 x ^ { 2 } - 71 x$