What is the name of the 16th-century Nahuatl-language grammar book written by Franciscan friar Andres de Olmos, the first systematic description of any indigenous language of the Americas to be printed?

• A Arte de la lengua tarasca
• B Arte de la lengua mexicana ✓
• C Vocabulario en lengua castellana
• D Arte para aprender la lengua maya

Olmos's 1547 'Arte' established the template for missionary grammars across the New World, analysing Nahuatl using Latin grammatical categories.