Determine Whether the Relation Represents a Function $\{ 8,18,28,38 \}$ Range $\{ 4,9,14,19 \}$

Multiple Choice

Determine whether the relation represents a function. If it is a function, state the domain and range.
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A) function
domain: $\{ 8,18,28,38 \}$
range: $\{ 4,9,14,19 \}$

B) function
domain: $\{ 4,9,14,19 \}$
range: $\{ 8,18,28,38 \}$

C) not a function