What are rugae?A) folds in the small intestine that increase the surface area for absorptionB) folds in the large intestine that increase the surface area for absorptionC) folds in the stomach that can flatten to expand the stomach volumeD) a motility pattern of the large intestineE) a motility pattern of the stomach

C) folds in the stomach that can flatten to expand the stomach volume

Explanation:

A ruguae is a structure of a layer of ridges produced by the foldings of the wall of an organ and is found in the inner surface of the stomach. Functions to allow the flattening of the stomach after the intake of the foods and liquids. They can appear on the wrinkles of the scrotum, vagina, and inside the urinary bladder. And appear when the organ or the tissues are deleted and is evident from the stomach and thus allows for the increase of the volume.

This is what i did 45-5=4040÷4=10so there are 10 white marbles but am not sure is just a question that am not sure