The 19^th Century Was the First Time It Was Suggested

The 19^th century was the first time it was suggested that the human population was growing exponentially and our food supply was just growing linearly. We're still here. What happened?

A) They were wrong about this.
B) Our food supply grows exponentially, too.
C) Agricultural advances have kept our food supply growing sufficiently so far.
D) There has just not been enough time yet.
E) Our growth rate has slowed markedly worldwide.