Under which British Act was the provision to establish a Federation of India concession of Governor’s provinces and Princely states made?

Under which British Act was the provision to establish a Federation of

1.	Under which British Act was the provision to establish a Federation of India concession of Governor’s provinces and Princely states made?
A.	Government of India Act 1918
B.	Government of India Act 1925
C.	Government of India Act 1930
D.	Government of India Act 1935
Answer» E.