We don't allow the local people to hunt endangered species for our consumption. They will become extinct sooner.

A. We don't allow the local people to hunt endangered species for our consumption, so they will become extinct sooner.

B. If we allowed the local people to hunt endangered species for our consumption, they would become extinct sooner.

C. We don't allow the local people to hunt endangered species for our consumption unless they will become extinct sooner.

D. They will become extinct sooner if we don't allow the local people to hunt endangered species for our consumption.