Find the Complement of the Set $\{x \mid x$ Is an Integer Strictly Between 0 and 9

Find the complement of the set.
- $\{x \mid x$ is an integer strictly between 0 and 9 $\}$ if $U$ is the set of all integers

A) $\{x x$ is an integer $\geq 9\}$
B) $\{x \mid x$ is an integer $\geq 0$ or $\leq 9\}$
C) $\{x \mid x$ is an integer $\geq 0\}$
D) $\{x \mid x$ is an integer $\leq 0$ or $\geq 9\}$