Which are enatiomers? optically active?identical? diastereomers?

Question

A.)...CH3
.....|
...H-C-Cl
.....|
.....Ch2Cl

B.).....H
.......|
...H3C-C-CH2CL
.......|
.......CL

C.)...CH3
.......|
....CL-C-H
......|
......CH2CL

D.)....CH2CL
.........|
......CL-C-H
.........|
.........CH3

E.).....CH3
........|
......H-C-CL
........|
......H-C-CL
........|
........CH3

F.).....CH3
........|
.....CL-C-H
........|
.....CL-C-H
........|
........CH3

G.)...CH3
......|
....H-C-CL
......|
...CL-C-H
......|
......CH3

H.)....CH3
........|
.....CL-C-CL
........|
......H-C-H
........|
........CH3

Thank you :)