Differences in Scientific Judgement Between Economists Is Similar to All

Differences in scientific judgement between economists is similar to all of the following except

A) astronomers debating whether the sun or earth was at the center of the solar system.
B) meteorologists debating the existence of global warming.
C) two politicians arguing about the fairness of the tax code.
D) explorers debating whether or not the earth was flat before the time of Christopher Columbus.