Who was/were the 10th century composer(s) of the Nalayira Divya

Who was/were the 10th century composer(s) of the Nalayira Divya Prabamdham?

Alvars
Nayanars
Appar
Sambandar
This question was previously asked in
UPSC CDS-1 – 2018
The Nalayira Divya Prabamdham is a collection of 4,000 Tamil verses composed by the Alvars, Tamil saint-poets who were followers of Vaishnavism. While the main period of the Alvars spanned from the 6th to 9th centuries CE, their work was compiled and organized by Nathamuni, a Srivaishnava scholar, possibly in the late 9th or 10th century. The verses themselves are attributed to the Alvars.
– The Nalayira Divya Prabamdham is a key sacred text of Vaishnavism.
– Its composers are the Alvars.
– The compilation occurred around the 10th century.
The Nayanars were Shaivite saint-poets whose devotional works, primarily the Tevaram (composed by Appar, Sambandar, and Sundarar), are central to Shaivism. Appar and Sambandar were prominent Nayanars, not composers of the Nalayira Divya Prabamdham. The verses of the Alvars are considered equivalent to the Vedas in the Tamil tradition by Srivaishnavites.