Scenario The North American Beaver Is a Large Rodent That Builds

Scenario
The North American beaver is a large rodent that builds dams to convert freshwater streams into ponds. Beavers build their dams out of trees, which they cut down using their front teeth. Beavers also eat the leaves and bark of trees, as well as the starchy roots of water lilies.
-When a beaver is eating leaves, what plant structure(s) is it ingesting?

A) mesophyll, but not parenchyma nor cork
B) parenchyma, but not mesophyll nor cork
C) cork, but not mesophyll nor parenchyma
D) mesophyll and parenchyma, but not cork