Why Might the Economy as a Whole Conform to the Predictions

Multiple Choice

Why might the economy as a whole conform to the predictions of a model even if not all people are rational?

A) The standard model doesn't assume rationality.
B) People who are rational will profit from those who are not.
C) People who are irrational will profit from those who are not.
D) It won't; for the standard model to work, all people must be rational.