With reference to his address to the nation on 14 December 2020, where he announced that beaches would be closed in the Eastern Cape, Sarah Baartman District Municipality and the Garden Route District Municipality, what (a) scientific data and modelling information did he rely on to make this decision, (b) is the source of the scientific data and modelling information and (c) total number of COVID-19 infections and deaths were prevented by the closure of the beaches vis-a-vis keeping them open?