Rosetta Stone Language Learning is proprietary computer-assisted language learning (CALL) software published by Rosetta Stone Inc. The software uses images, text, and sound to teach words and grammar by spaced repetition, without translation. Rosetta Stone calls its approach Dynamic Immersion (a term which has been trademarked).

Based on that paragraph can we conclude that this sentence is true?
Rosetta Stone only teaches english, spanish and french.
It's impossible to say