Determine the Domain and Range of the Function $( - \infty , - 5 ]$

Determine the domain and range of the function.
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A) domain: $( - \infty , - 5 ]$ range: $( - \infty , 1 ]$
B) domain: $( - \infty , \infty )$ range: $( - \infty , 1 ]$
C) domain: $( - \infty , \infty ) ;$ range: $( - \infty , \infty )$
D) domain: $( - \infty , - 5 ) \cup ( - 5 , \infty )$ range: $( - \infty , 1 ) \cup ( 1 , \infty )$