Which of the following statement(s) is/are found to be correct? I. River systems of India are divided into rivers with their sources in the Himalayas and the others originating in the hills of the Peninsula. II. The contrast between the rivers fl owing from Himalayas and those in the Peninsula is a result of the differences in the topography and climate of these two regions. III. The Himalayan Rivers are perennial snow fed rivers which are younger than the Deccan system and carry 70 per cent of the total discharge of river water into the sea.