You launched a successful mobile game and utilize a 50 TB Cloud Spanner instance with PITR for storing game data in production. Upon reviewing game analytics, you discovered players exploiting a loophole to gain unfair points and climb the leaderboard. Additionally, a DBA mistakenly executed an emergency bugfix script that corrupted some production data. You must assess the scope of the corruption and restore the production environment. What steps should you take? (Select two.)