Which cup is the nut under?

“The system is rigged.  Look around.  Oil companies guzzle down billions in profits.  Billionaires pay lower tax rates than their secretaries.  And Wall Street C.E.O.s—the same ones who wrecked our economy and destroyed millions of jobs—still strut around Congress, no shame, demanding favors, and acting like we should thank them.” – Senator Elizabeth Warren (quoted by Jeffrey Toobin in “The Professor”)