Which one of following pairs is not correctly matched?

Solution (By Examveda Team)

The Rigveda is the oldest and the most highly valued work of the Hindus. This Samhita (Collection) is unique in its nature. In fact, it is not a book, but a compilation composed of several books which can be individually distinguished from each other. The present from of this Samhita clearly indicates that the collection is not a single work, but consists of older and later elements.