Answer:
A
Explanation:
The first "circle" is the "domain", which is the set of x values of the function.
The second "circle" is the "range", which is the set of y values of the function.
The range is 4, 7, 9. There are a few x values that match to same y-values but the range is basically the three numbers, 4, 7, and 9.
Option A, {4,7,9} is the correct answer.