They weren't in A and B at all; they were completely new texts by Archimedes, and they were called "The Method" and "The Stomachion." And it became a world famous manuscript.
No estaban ni en A ni en B; eran textos de Arquímedes completamente nuevos, y se llamaban "El Método" y "El Stomachion". Y se convirtió en un manuscrito de fama mundial.