Kristi analyzed the following paragraph. Koalas, the cuddly looking animals from eastern Australia, live in eucalyptus trees. When not climbing or napping in the trees, they are eating the leaves. A mother koala carries her baby for about six months in a pouch, much as a kangaroo mother carries her young. When the infant is old enough to come out of the mother’s pouch, it hangs on to her belly or catches a ride on her back.

Which detail from the text supports Kristi’s analysis that koalas are a unique kind of mammal?

A.
Koalas are cuddly looking animals.
B.
Koalas climb eucalyptus trees and eat the leaves.
C.
Infants are carried in the mother’s pouch for six months.
D.
The baby hangs on to the mother’s belly and rides on her back.