She said " fine , but if you do n't eat that entire thing I ' m going to shove it up your butt ! " . No joke . Dear old Grandma said that . Which comes to another point , she was cheap too .

Question: What may be the reason for their grandma 's statement ?
Answer: None of the above choices .She does n't like to see leftovers on plates .She does n't want to clean up leftovers .She does n't want to waste money on food .