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 on day 10 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. $$\begin{array} { | l | l | l| } \hline \text { Activity } & \text { Duration } & \text { Predecessor } \\\hline \text { A } & 5 \text { days } & - \\\hline B & 4 \text { days } & \text { A } \\\hline C& 5 \text { days } & \text { A } \\\hline \mathrm { D } & 6 \text { days } & B \\\hline E & 6 \text { days } & C, D \\\hline F & 6 \text { days } & E \\\hline\end{array}$$

A) 5 hours
B) 10 hours
C) 4 hours
D) 8 hours