$6)$ The weekly output of a fabrication process is shown below together with data for labour and material inputs. Overhead is charged weekly at the rate of $$1,500.$ Assume a $40-$hour week and an hourly wage of $$16.$ Material cost is $$10$ per kilogram. What is multifactor productivity?WeekOutput#WorkersMaterial $($Kg$)2,70049,00020$A$)1\mathrm{.}793$B$)1\mathrm{.}832$C$)1\mathrm{.}457$D$)1\mathrm{.}622$E$)1\mathrm{.}575$