Q) In determining the Indian climate, major role played by Himalayas is/are:
Options:
A)The east-west extension of the Great-Himalayas does not permit the summer monsoon to cross it and thus keeps its sojourn restricted to India
B) The direct the summer monsoon towards the north-west
C) During the winter they stop the southward penetration of the cold and dry polar air
D) All of the above