Please someone help I’m stuck with this question please help and show work please

Answer:
I would think A.
Step-by-step explanation:
Let me explain real quick. A basically states the possible weights, or the y of the function, which include serving size and full bag. B is full numbers which cannot be used in a bag. C and D look like they would he in a perfect form however they are not showing the possible weights for both serving and bag.