Which Three Variables Have Been Shown to Have Strong Predictive

Multiple Choice

Which three variables have been shown to have strong predictive power for election results?

A) whether the country is at war, productivity, and the divorce rate
B) education status, life expectancy, corporate profits
C) disposable income, the inflation rate, and years in office for the party in power
D) the savings rate, the trade deficit, and the unemployment rate of single mothers