3 The earliest-start Gantt chart for the project in example 16.1 is as follows: a. i. How many activities that must be completed before activity V? ii. How many activities are parallel to activity W? iii. How many activities are parallel to activity Y ? iv. How many activities are critical? b. Identify the critical path. i. How much is the slack time of activity V? ii. How much is the slack time of activity W? iii. How much is ES and EF of activity T? iv. How much is LS and LF of activity U? v. How much is the completion time of the project