Given this text: "So far, humans had communicated only with the N'mah of the Sirius Stargate, a culture that had managed to remake portions of the gate's interior into a microworld where they continued to live six thousand years later, unnoticed by the Xul even when the Xul continued to use that Gate for interstellar transits.". Which cefr level fits best: A1, A2, B1, B2 or C1?
c1