Read the following passage carefully:
Before Dr. Miriam Vance began structural stabilization on Vienna’s historic St. Jude Opera House in 2021, her archival research had already yielded crucial insights. In 2018, while searching municipal records, she located architect Leopold Weber’s original 1782 floor plans. However, these blueprints omitted the hydraulic stage lift uncovered by her crew behind plaster walls that had been applied during a 1910 renovation. Historical records later confirmed that this hydraulic system had been installed in 1845 to replace timber rigging destroyed in a backstage fire earlier that year. Following years of conservation after the 2021 discovery, Vance’s team successfully tested the restored hydraulic mechanism in 2023.
According to the passage, which of the following events occurred chronologically BEFORE the 1910 renovation?
- The installation of the hydraulic stage lift systemAnswer
- BThe discovery of Leopold Weber's original floor plans
- CThe commencement of structural stabilization work on the opera house
- DThe operational testing of the restored stage mechanism