$\backslash$table$[[$Activity$,\backslash$table$[[$Immediate$],[$Predecesso$]],\backslash$table$[[$Time$],[($weeks$)]]],[$A$,--,3],[$B$,--,4],[$C$,--,2],[,,],[$D$,$A$,4],[$E$,$A$,$ B$,5],[$F$,$A$,$ B$,$ C$,2],[,,],[$G$,$D$,$ E$,1],[$H$,$E$,6],[$I$,$E$,$ F$,2],[,,],[$J$,$G$,$ H$,$ I,$4],[$K$,$H$,$ I,$3],[$L$,$I,$6]]$

Using Table $7\mathrm{.}6,$ suppose activity D can be shortened from four days to one day. Assume all other activity tim remain the same. How much shorter will the total project earliest completion time become?

Select one:

A$.$ zero days