Under which British Act was the provision to establish a Federation of India concession of Governor‚Äö√Ñ√¥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‚Äö√Ñ√¥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.