Give the Domain and Range of the Relation $x y = - 7$

Multiple Choice

Give the domain and range of the relation.
- $x y = - 7$

A) domain: $( - \infty , 0 ) \cup ( 0 , \infty )$ ; range: $( - \infty , 0 ) \cup ( 0 , \infty )$
B) domain: $[ 0 , \infty )$ ; range: $( - \infty , \infty )$
C) domain: $( - \infty , \infty )$ ; range: $( - \infty , \infty )$
D) domain: $( - \infty , 0 ) \cup ( 0 , \infty )$ ; range: $[ 0 , \infty )$