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 .
According to the above context, choose the best option to answer the following question.
Question: What may be the reason for their grandma 's statement ?
Options:
A. None of the above choices .
B. She does n't like to see leftovers on plates .
C. She does n't want to clean up leftovers .
D. She does n't want to waste money on food .


D