Using data below from the Australian National Accounts, what official description was given to the period for the March and June quarters 2020? Give reason for your answer. Chain volume measures GDP GDP per capita Dec 19 0.4 Mar 20 -0.3 -0.6 Jun 20 -7.0 -7.2 sep 20 3.3 3.2 Sep 19 to sep 20 -3.8 -4.7