Express in Set Builder Notation the Set of Numbers Indicated $\{ x \mid - 2 \leq x \leq 6 \}$

Multiple Choice

Express in set builder notation the set of numbers indicated on the number line.
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A) $\{ x \mid - 2 \leq x \leq 6 \}$
B) $\{ x \mid - 2 < x \leq 6 \}$
C) $\{ x \mid - 2 < x < 6 \}$
D) $\{ x \mid - 2 \leq x < 6 \}$