Parts of a sentence are given below in jumbled order. Arrange the parts in the correct order to form a meaningful sentence.
The ashrams / used / were / the centres / of / knowledge and learning / as
1
The ashrams were used as the centres of knowledge and learning.
2
As The ashrams of knowledge and learning were used the centres
3
Knowledge and learning were used as the centres of the ashrams.
4
The centres of the ashrams were used as knowledge and learning.