$\backslash$table$[[$Activity$,$Optimistic,Most likely,Pessimistic,Activity,Optimistic,Most likely,Pessimistic$],[$A$,1\mathrm{.}5,2,2\mathrm{.}3,$E$,2\mathrm{.}5,4,6],[$B$,1,1,1,$F$,1\mathrm{.}5,2,4\mathrm{.}5],[$C$,2,3,4,$G$,2,3,6\mathrm{.}5],[$D$,0\mathrm{.}5,1,2\mathrm{.}5,$H$,1,2,3\mathrm{.}5]]$

Calculate the expected completion times and completion time variances for each activity.