Determine Whether the Relation Represents a Function

Multiple Choice

Determine whether the relation represents a function. If it is a function, state the domain and range.
-{(-2, 3) , (-1, 0) , (0, -1) , (1, 0) , (3, 8) }

A) function domain: {3, 0, -1, 8} Range: {-2, -1, 0, 1, 3}
B) function domain: {-2, -1, 0, 1, 3} range: {3, 0, -1, 8}
C) not a function