A Project Has the Precedence Requirements and Activity Durations Shown

A project has the precedence requirements and activity durations shown in the table.After he draws the network,the project manager decides that activities B,C,and D can be represented by a hammock activity.What are the early start and late finish times associated with this hammock activity? $$\begin{array} { | l | l | l | } \hline & \text { Tirne } & \text { Predecessor } \\\hline \mathrm { A } & 7 & \\\hline B & 8 & \mathrm {~A} \\\hline \mathrm { C } & 13 & \mathrm {~B} \\\hline \mathrm { D } & 8 & \mathrm { C } \\\hline \mathrm { E } & 7 & \mathrm {~A} \\\hline \mathrm { F } & \mathrm { 6 } & \mathrm { E } \\\hline \mathrm { G } & 6 & \mathrm {~A} \\\hline \mathrm { H } & 11 & \mathrm { G } \\\hline \mathrm { I } & 12 & \mathrm { H } \\\hline \mathrm { J } & 14 & \mathrm { D } , \mathrm { F } , \mathrm { I } \\\hline\end{array}$$

A) 11,30
B) 7,24
C) 11,24
D) 7,36