It’s time for a set of fiendishly confounding questions about the global economy in the form of a quiz. Stephan Richter, editor in chief of the Globalist, joined Marketplace Morning Report host David Brancaccio to talk about something most people aren’t aware of about the globalized world. The question of the day is: “How many billionaires are there in the world?”

Is it…

A. 13.7 million

B. 3.1 Million

C. 2325

D. 286

Click the media player above to find out.