Simplify the Expression $$6 \left( x ^ { 2 } - 9 x - 8 \right) - 5 \left( x ^ { 2 } - 9 x - 8 \right) + 8 \left( x ^ { 2 } - 9 x - 8 \right)$$

Multiple Choice

Simplify the expression. $$6 \left( x ^ { 2 } - 9 x - 8 \right) - 5 \left( x ^ { 2 } - 9 x - 8 \right) + 8 \left( x ^ { 2 } - 9 x - 8 \right)$$

A) $9 x ^ { 2 } - 171 x - 152$
B) $9 x ^ { 2 } - 171 x - 72$
C) $9 x ^ { 2 } - 81 x - 72$
D) $9 x ^ { 2 } - 81 x - 152$
E) none of these