which of the following statements is not correct? a. stagflation refers to an economy that is experiencing a simultaneous increase in inflation and stagnation of economic output. b. stagflation or recession-inflation is a situation in which the inflation rate is high, the economic growth rate slows, and unemployment remains steadily high. c. stagflation may result from a stock market crash held by households or an increase in money supply. d. stagflation may result from an increase in nominal wages or a decrease in labor productivity.