Whorl of sepals in flower represents

Whorl of sepals in flower represents
Option 1 : Androecium
Option 2 : Gynoecium
Option 3 : Calyx
Option 4 : Corolla

Whorl of sepals in flower represents
Option 1 : Androecium
Option 2 : Gynoecium
Option 3 : Calyx
Option 4 : Corolla