Recognize functions from tables

Determine whether a table of values of a relationship represents a function.

Problem

The table compares the shoes worn by customers in an ice cream shop and the ice cream flavor that they picked.
Can ice cream flavor be represented as a function of the type of shoe?
Shoe typeIce cream flavor
BootsStrawberry
LoafersVanilla
SandalsChocolate
High-heelsBanana
Flip-flopsPineapple
MoccasinsChocolate
SandalsBanana
LoafersVanilla
Please choose from one of the following options.