The activities of a project, their duration and the precedence relationships are given in the table. For example, in a precedence relationship “X < Y, Z” means that X is predecessor of activities Y and Z. The time to complete the activities along the critical path is ______ weeks.ActivityDuration (weeks)Precedence RelationshipA5A < B, C, DB7B < E, F, GC10C < ID6D < GE3E < HF9F < IG7G < IH4H < II2----

The activities of a project, their duration and the precedence relatio

1.	The activities of a project, their duration and the precedence relationships are given in the table. For example, in a precedence relationship “X < Y, Z” means that X is predecessor of activities Y and Z. The time to complete the activities along the critical path is ______ weeks.ActivityDuration (weeks)Precedence RelationshipA5A < B, C, DB7B < E, F, GC10C < ID6D < GE3E < HF9F < IG7G < IH4H < II2----
A.	17
B.	21
C.	23
D.	25
Answer» D. 25