Which is an example of the founder effect?
A. When a large island fragmented into two smaller islands, this led to ecological differences between the islands. This resulted in the evolution of two species of lizards.
B. All of the members of a native bird species found on an island were lost when cats were introduced, but the populations have since been restored through the immigration of a small number of individuals of the species from a nearby island (and after the elimination of cats from the island)
C. All of the above are examples of the founder effect.
D. Most of the deer on an island were killed off due to a cyclone, but the population has since been restored due to the surviving members of the original population (though genetic variation remains low).