QUESTION $14$ A firm is planning a project for the development of a new product. The network of activities and data are shown follow. Time Immediate Activity $($weeks$)$ Predecessor $254$ C $56.$ D$,$E F What are the slack times of Activities D and E$?0$ and $0,$ respectively $1$ and $1,$ respectively $2$ and $0,$ respectively $0$ and $1,$ respectively $1$ and $0,$ respectivelyshown follow. A firm is planning a project for the development of a new product. The network of activities and data are Activity Immediate Time $($weeks$)$ Predecessor A $2$ A $5456$ E B$,$C F D$,$E $3$ What are critical activities? $,,,$ F A$,$ C$,$ E$,$ F $,,$ D$,$ F A$,$ C$,$ D$,$ F $,,,,$ FA firm is planning a project for the development of a new product. The network of activities and data are shown follow. Activity Immediate Time Predecessor $($weeks$)$ A $2$ A C A $5$ E $.$ F D$,$E $3$ What is the project duration? $14$ weeks $15$ weeks $16$ weeks $17$ weeks $18$ weeks $|$