Factor the GCF Out of the Given Expression $17 x ^ { 8 } + 17 x$

Multiple Choice

Factor the GCF out of the given expression.
- $17 x ^ { 8 } + 17 x$

A) $17 x \left( x ^ { 7 } \right)$
B) $17 \left( x ^ { 8 } + x \right)$
C) $17 x \left( x ^ { 7 } + 1 \right)$
D) $17 \left( x ^ { 9 } + 1 \right)$