Isomerism that arises out of the difference in spatial arrangement of atoms or groups about the doubly bonded carbon atoms are called? (In specific)

Isomerism that arises out of the difference in spatial arrangement of

1.	Isomerism that arises out of the difference in spatial arrangement of atoms or groups about the doubly bonded carbon atoms are called? (In specific)
A.	Structural Isomerism
B.	Stereo Isomerism
C.	Geometrical Isomerism
D.	Optical Isomerism
Answer» D. Optical Isomerism