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."
הם לא היו בA ובB בכלל; הם היו טקסטים חדשים לגמרי של ארכימדס, והם נקראו "השיטה" ו "הסטומכיון."