Suppose The Rosetta Stone is a granodiorite stele inscribed with three versions of a decree issued at Memphis, Egypt in 196 BC during the Ptolemaic dynasty. The decree appears in three scripts: Ancient Egyptian hieroglyphs, Demotic script, and Ancient Greek. The stone played a crucial role in deciphering Egyptian hieroglyphs.
Can we infer that "The Rosetta Stone was written in only one language"? Yes, no, or maybe?