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Is relation t a function? Is the inverse of relations t a function?

Relation t :

x,0,1,2,3

y,-2,1,10,2

ARelation t is not a function. The inverse of relation t is not a function.
BRelation t is not a function. The inverse of relation t is not a function.
CRelation t is not a function. The inverse of relation t is a function.
DRelation t is a function. The inverse of relation t is a function.