Table 37 -Using Table 3

Table 3.7
$$\begin{array} { | c | c | c | } \hline \text { Activity } & \begin{array} { c } \text { Immediate } \\\text { Predecessor } ( \mathrm { s } ) \end{array} & \begin{array} { c } \text { Time } \\\text { (weeks) }\end{array} \\\hline \mathrm { A } & \cdots & 3 \\\mathrm {~B} & - \mathrm { A } \\\mathrm { C } & \cdots & 4 \\\\\mathrm { D } & \mathrm { A } & 2 \\\mathrm { E } & \mathrm { A } , \mathrm { B } & 4 \\\mathrm {~F} & \mathrm {~A} , \mathrm {~B} , \mathrm { C } & 2 \\\\\mathrm { G } & \mathrm { D } , \mathrm { E } & 1 \\\mathrm { H } & \mathrm { E } & 6 \\\mathrm { I } & \mathrm { E } , \mathrm { F } & 2 \\\\\mathrm {~J} & \mathrm { G } , \mathrm { H } , \mathrm { I } & 4 \\\mathrm {~K} & \mathrm { H } , \mathrm { I } & 3 \\\mathrm {~L} & \mathrm { I } & 6 \\\hline\end{array}$$
-Using Table 3.7,suppose activity D can be shortened from 4 weeks to 1 week.Assume all other activity times remain the same.How much shorter will the total project earliest completion time become?

A) 0 weeks
B) 1 week
C) 2 weeks
D) 3 weeks