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

A. Peer review is designed to assess the validity, quality and often the originality of articles for publication. 

B. Its ultimate purpose is to maintain the integrity of science by filtering out invalid or poor-quality articles.

C. Running articles through the process of peer review adds value to them.
D. From a publisher’s perspective, peer review functions as a filter for content, directing better quality articles to better quality journals and so creating journal brands.