Even though participants in the economy are motivated by self-interest, the "invisible hand" of the marketplace guides this self-interest into promoting general economic well-being

According to the short-run Phillips Curve, there is a trade-off between

(a) interest rates and inflation (b) the growth of the money supply and interest rates (c) unemployment and economic growth (d) inflation and unemployment (e) economic growth and interest rates

________ would be the source of a "real" business cycle

A) Unanticipated changes in monetary policy B) Anticipated changes in monetary policy C) Technology shocks D) all of the above