Which one of the following is not used for checking plagiarism?

LaTeX is not used for checking plagiarism, as it is a typesetting system for preparing documents.

It formats text, equations and references but does not compare work for similarity.

Turnitin is a widely used plagiarism detection service that flags matching text.

iThenticate is a similarity checking tool aimed at researchers and publishers.

Urkund, now Ouriginal, is another established plagiarism detection service.

The UGC promotes such similarity software through its policy on academic integrity.