A county wants to build one centrally$-$located processing facility to serve the county's four recycling drop$-$off locations. The four drop$-$offs have characteristics as given in the table below. What is the approximate center of gravity of these four locations? $($Round answer to two decimal places.$)$

$\backslash$table$[[$Location$,$X$-$coordinate,Y$-$coordinate,Tonnage$],[$Drop$-$off point A$,5,7,300],[$Drop$-$off point B$,8,10,30],[$Drop$-$off point C$,45,7,20],[$Drop$-$off point D$,7,5,30]]$

A$.(11\mathrm{.}75,11\mathrm{.}75)$

B$.(43\mathrm{.}85,92\mathrm{.}76)$

C$.(2,850\mathrm{.}00,2,690\mathrm{.}00)$

D$.(7,50,7,08)$

E$.(8\mathrm{.}00,10\mathrm{.}00)$