Which sentences use a colon correctly?

Choose all answers that are correct.

A.
These books are for: Ralph, Jessica, and Craig.

B.
Whales primarily consume four sources of food: shrimp, larvae, plankton, and krill.

C.
Her favorite colors are: green, blue, and purple.

D.
Our bus will stop in these cities: Knoxville, Atlanta, and Tallahassee.

E.
Please pack the following: a sleeping bag, a change of clothes, and a flashlight.