Answer:
not a function
Explanation:
I have no idea what options are there in the drop down box so I am guesstimating
A function can have only one one output for a specific input. In this mapping, 0 from set A is mapped to 2 values in set B, namely 4 and 7. So this is not a function
The rest you will have to match based on the drop-down choices and my explanation above