What is a key difference between the popular spaceship framework and Garrett Hardin's lifeboat framework? A. In the spaceship framework, humans share the limited resources of the Earth; in the lifeboa

What is a key difference between the popular spaceship framework and Garrett Hardin's lifeboat framework? A. In the spaceship framework, humans share the limited resources of the Earth; in the lifeboat framework, there are enough resources for some and not others. B. By comparing the Earth to a spaceship, environmentalists say we must hoard resources; by comparing the Earth to a lifeboat, Hardin says we must share resources. C. The spaceship metaphor suggests that resources will eventually run out for everyone; the lifeboat metaphor suggests that resources will never run out. D. The framework of the spaceship suggests that resources are scarce, but high quality; the framework of a lifeboat suggests that resources are plentiful, but low quality.