GovSlack is a separate Slack environment specifically designed for U.S. public sector organizations and their security and compliance requirements. Slack states that GovSlack enables agencies, contractors, citizens, and partners to collaborate through an environment designed for stringent public-sector operational requirements. GovSlack operates separately from commercial Slack on the `slack-gov.com` domain, with data isolated from the commercial Slack environment. It runs in AWS GovCloud-certified infrastructure and supports compliance requirements including FedRAMP High. Developers making commercial Slack apps available in GovSlack must separately configure and deploy them for that environment and follow GovSlack-specific API, OAuth, credential, and Marketplace requirements. It is therefore neither a personal free-workspace product nor a Marketplace testing environment. Answer A is correct.