Consider the Project That Is Neatly Summarized in This Table

Consider the project that is neatly summarized in this table.What are the lowest priority activities when using the smallest amount of slack leveling heuristic? $$\begin{array} { | l | l | l | l | } \hline \text { Activity } & \text { Duration } & \text { Predecessors } & \text { Workers Required } \\\hline \mathrm {A } & 2 & - & 3 \\\hline \mathrm { B} & 4 & \text { A } & 4 \\\hline \mathrm { C } & 6 & \text { A } & 2 \\\hline \mathrm { D } & 7 & \mathrm {~B} & 5 \\\hline \mathrm { E } & 9 & \mathrm { C } , \mathrm { D },\mathrm { E } & 2 \\\hline\end{array}$$

A) A and B
B) C and E
C) A and D
D) B and D