The abuse of the oceans is a tragedy of the commons because $q,$

A$.$ as we overfish and dump waste into our oceans, the marginal external cost increases

B$.$ with no incentives to use our oceans sustainably, we overuse them, depleting the fish stock and destroying wildlife habitats

C$.$ overfishing, dumping waste, and emitting greenhouse gas emissions are creating a deadweight loss

D$.$ the marginal social cost of using the oceans exceeds the marginal private cost