Which of the following chemical is used instead of using ${\mathrm{C}}_2{\mathrm{Cl}}_4$ in the dry-cleaning process

For dry cleaning tetrachloroethene was used earlier. It is more harmful to groundwater. Instead of ${\mathrm{C}}_2{\mathrm{Cl}}_4$ in the dry-cleaning process, liquefied carbon dioxide with suitable detergent is used. It is less harmful to groundwater. This day, for the purpose of bleaching clothes in the process of laundry ${\mathrm{H}}_2{\mathrm{O}}_2$ is used and it gives better results.