The three activities and their details in Table $1$ are on the critical path of a project and are candidates for crashing. Which activity should be crashed first to reduce one day from the project's duration and why did you choose this activity?Table $1.$ActivityNormal TimeNormal CostCrash DurationCrash CostA$9$ days$$8,0007$ days$$12,000$B$5$ days$$2,0003$ days$$10,000$C$12$ days$$9,00011$ days$$12,000$