Express the Set in the Simplest Interval Form $(-\infty, 7] \cup(-\infty,-2)$

Multiple Choice

Express the set in the simplest interval form.
- $(-\infty, 7] \cup(-\infty,-2)$

A) $(-2,7]$
B) $(-\infty, 7]$
C) $(-\infty,-2]$
D) $(-\infty, 7)$