why were the initial claims for umemployment such a clear sign of economic impact of COVID-19? (a) a change in initial claims triggers automatic unemployment compensation adjustments (b) they were available weekly and showed a dramativ increase (from 200,000 to 7,000,000 within a month) (c) the standard definition of a recession is based upon the statistic (d) they are reported monthly but happened to be available when COVID-19 began