Dorothy and her friends must cross a river to continue on their journey in The Wonderful Wizard of Oz. How are they able to cross the river?

A. Dorothy’s slippers are magical and when she steps in the river, the water parts and they walk across.
B. They all decide to swim.
C. The Lion puts each on his back and he swims across.
D. The Woodman chops down trees and builds a raft.