NO.PZ2023061903000011
问题如下：
Q. When aggregate real personal income, industrial output, and the S&P 500 Index all increase in a given period, it is most accurate to conclude that a cyclical upturn is:选项：
A.occurring. B.about to end. C.about to begin.解释：
A is correct. Aggregate real personal income and industrial output are coincident indicators, whereas the S&P 500 is a leading indicator. An increase in aggregate personal income and industrial output signals that an expansion is occurring, whereas an increase in the S&P 500 signals that an expansion will occur or is expected to continue. Taken together, these statistics indicate that a cyclical upturn is occurring.
A正确。实际个人总收入和工业产出都是同步指标，而标准普尔500指数是领先指标。个人总收入和工业产出的增加表明经济正在扩张，而标准普尔500指数的上升表明经济将会扩张或预计将继续扩张。综上所述，这些统计数据表明，周期性的好转正在发生。
如题
