The statement that population aging alone CANNOT explain the recent behavior of the aggregate labor force participation rate (LFPR) in some country is equivalent to stating that A.) The number of retired persons in that country has grown. B.) The unemployment rate in that country has changed. C.) The LFPR for at least one individual demographic group in that country (such as 16-24 year-olds) has changed. D.) A.) and C.) E.) A.), B.) and C.)