Give the Domain and Range of the Relation $\{ 4,7,12 \}$

Multiple Choice

Give the domain and range of the relation.
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A) domain: $\{ 4,7,12 \}$ ; range: $\{ 5,8,13 \}$
B) None of these
C) domain: $\{ 4,5,7 \}$ ; range: $\{ 8,12,13 \}$
D) domain: $\{ 5,8,13 \} ;$ range: $\{ 4,7,12 \}$