15. Refer to Exercise 4 in Chapter 4. Ten days after the start of the project, the following information is received:

Draw the updated network. Calculate the new project completion date. Check if there are changes to the completion date and/or to the critical path. Mention the causes for such changes, if any.

\begin{tabular}{ll} \hline Activities A and B & Completed on time \\ Activity C & Started; 3 days left \\ Activity D & Started; 2 days left \\ Activity E & Has not started yet but duration adjusted to 5 days \\ \hline \end{tabular}