Decide Whether the Relation Is a Function, and Give the Domain

Multiple Choice

Decide whether the relation is a function, and give the domain and range.
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A) Not a function; domain: $\{-3,0,6\}$ ; range: $\{-4,-9\}$
B) Not a function; domain: $\{-4,-9\}$ ; range: $\{-3,0,6\}$
C) Function; domain: $\{-3,0,6\}$ ; range: $\{-4,-9\}$
D) Function; domain: $\{-4,-9\}$ ; range: $\{-3,0,6\}$