Categorize the input news's emotional tone into one of three groups.
Options: positive, negative

Lululemon Athletica (NASDAQ:LULU) appoints former Twitch boss Mike Aragon as the chief executive officer of its fitness tech unit MIRROR along with lululemon Digital Fitness, coming into effect on 17 January.   Aragon replaces the founder of MIRROR Bryn Putnam, who unexpectedly left the company last year.
positive