Give the Domain and Range of the Relation $\{ - 2 \}$

Multiple Choice

Give the domain and range of the relation.
-

A) domain: $\{ - 2 \}$ ; range: $( - \infty , \infty )$
B) domain: $( - \infty , \infty )$ ; range: $( - \infty , \infty )$
C) $\text { domain: }(-\infty, \infty) \text {; range: }\{-2\}$
D) domain: $( - \infty , - 2 ) \cup ( - 2 , \infty )$ ; range: $( - \infty , \infty )$