Gaseous `SO_(3)` molecule
A. is planner triangular in shape with three `sigma-` bonds from `sp^(2)-p` overlap and three `pi-` bonds formed by two `p pi-p pi` overlap and one `p pi- d pi` overlap.
B. is planner triangular in shape with three `sigma-` bonds from `sp^(2)-p` overlap and three `pi-` bonds formed by one `p pi-p pi` overlap and two `p pi-d pi` overlap.
C. is a pyramidal molecule with one double bond and two single bonds
D. planner triangular in shape with two double with two double bonds between S and O and one single bond
