Consider the following table of activities A through $G$ in which $A$ is the start node and $G$ is the stop node.

$\backslash$table$[[$Activity$,$Duration $($days$),$Predecessor$],[$A$,5,-],[$B$,8,$A$],[$C$,7,$A$],[$D$,6,$A$],[$E$,9,$B$,$ C$,$ D$],[$F$,10,$B$,$ C$,$ D$],[$G$,5,$E$,$ F$]]$

On a piece of scratch paper, draw the network associated with this table and determine the following. Suppose activity $D$ were to slip by two days, taking its duration from six to eight days. What would be the effect on overall project duration?