Use the Project Described in the Table to Determine the Total

Use the project described in the table to determine the total resources required for this project during week 1 if a worker is expected to devote half-time (four hours per day) to this project.Assume that the project work is conducted on a 5-day-per-week basis. $$\begin{array} { | l | l | l | } \hline \text { Activity } & \text { Duration } & \text { Predecessor } \\\hline \mathrm { A } & 5 \text { days } & - \\\hline \mathrm { B } & 4 \text { days } & \mathrm { A } \\\hline \mathrm { C } & 5 \text { days } & \text { A } \\\hline \mathrm { D } & 6 \text { days } & \mathrm { B } \\\hline \mathrm { E } & 6 \text { days } & \mathrm { C } , \mathrm { D } \\\hline \mathrm { F } & 6 \text { days } & \mathrm { E } \\\hline\end{array}$$

A) 40 hours
B) 20 hours
C) 28 hours
D) 36 hours