The source tabs summarize a newsroom paywall experiment. Source 1 - timestamp feed: feed entry: cohort randomization completed on December 15, 2025 at 8:20 a.m.; feed entry: bug rollback executed on December 15, 2025 at 3:10 p.m.; feed entry: subscriber report generated on December 19, 2025 at 5:30 p.m. Source 2 - day-end summary: summary entry: meter code deployed on December 15, 2025 at 11:45 a.m.; summary entry: revised deployment posted on December 17, 2025 at 5:30 p.m.; summary entry: editorial review held on December 21, 2025 at 5:30 p.m. Read each timestamp before comparing the choices. Which chronology matches the timestamped source entries?