We Know the Planet Can't Support an Ever-Increasing Human Population

We know the planet can't support an ever-increasing human population. At some point humans will outstrip the resources available. Are we doomed?

A) Definitely
B) Wealthy countries like the United States will be okay, but developing countries are doomed.
C) No. With foresight and planning, we can possibly reach a sustainable equilibrium before it is too late.
D) No. Technology will keep expanding our resources to keep up with population growth, like has happened with agriculture so far.
E) There's no way to know. We just have to do what we do and hope for the best.