Consider a Project Network That Begins with Activity X and Is

Multiple Choice

Consider a project network that begins with activity X and is followed by activity Y. The earliest start time for activity X is 5 days and it will take 3 days to be completed. The earliest start time for activity Y is 12 days. Given this information, activity X has _____ of free slack.

A) 20 days
B) 4 days
C) 12 days
D) 9 days
E) 15 days