Given the Set Sketched on the Number Line, Identify the Type

Multiple Choice

Given the set sketched on the number line, identify the type of interval (open, closed, half-open, open infinite, closed infinite) , write the set using set-builder notation, and write the set using interval notation.
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A) closed interval; $\{ x \mid - 9 \leq x \leq - 3 \} ; [ - 9 , - 3 ]$
B) half-open interval; $\{ x \mid - 9 < x \leq - 3 \} ; ( - 9 , - 3 ]$
C) half-open interval; $\{ x \mid - 9 \leq x < - 3 \} ; [ - 9 , - 3 )$
D) open interval; $\{ x \mid - 9 < x < - 3 \} ; ( - 9 , - 3 )$