Elephant Populations in Some African Countries Have Started to Rise

Multiple Choice

Elephant populations in some African countries have started to rise because

A) poachers and environmentalists are working together to save the elephants.
B) new laws make killing elephants and selling their ivory illegal.
C) some elephants have been made a private good, and people are allowed to kill elephants on their own property.
D) high ivory taxes make it hard to earn a decent return on elephant tusks.