Find the Domain and the Range of the Relation $\{ ( 9,4 ) , ( - 7,0 ) , ( - 2 , - 2 ) , ( 15 , - 7 ) \}$

Find the domain and the range of the relation.
- $\{ ( 9,4 ) , ( - 7,0 ) , ( - 2 , - 2 ) , ( 15 , - 7 ) \}$

A) domain: $\{ - 7 , - 2,9,15 \}$ ; range: $\{ 0,4 \}$
B) domain: $\{ - 7 , - 2,9,15 \}$ ; range: $\{ - 7 , - 2,0,4 \}$
C) domain: $\{ - 7,0,4,9 \}$ ; range: $\{ - 7 , - 2,15 \}$
D) domain: $\{ - 2,0,9,15 \}$ ; range: $\{ - 7 , - 2,4,15 \}$

Correct Answer:

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