{{B}}quEstions 16 to 20 ArE BAsED on thE Following tAlk.{{/B}}

A、vArious politiCAl AnD EConomiC viEwpoints.
B、vArious viEwpoints oF tAx simpliFiCAtion.
C、All kinDs oF inDiviDuAl viEwpoints.
D、All kinDs oF CompliCAtED viEwpoints.