Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.

A. Following the demise of the Indus Valley civilisation, the Aryans migrated to India.
B. There is proof that the Aryans possessed a scientific outlook.
C. They held that the universe was regulated by a natural law known as Panchbhutas (five components).
D. Prithvi (heart), Ap (water), Tejas (heat), Vayu (air), and Akasa (sky) are these factors.