The Activity on node diagram in Fig 15.1 was prepared at the beginning of a software update project. The duration in days is written besides the letter for each activity. Start A, 4 C, 1 D, 5 G, 3 E, 4 B, 3 F, 1 H, 5 1, 1 J, 2 END Fig 15.1: Activity on node diagram I. Identify the critical path? For example, type X-Y-Z. Do not put spaces inbetween. II. At the end of the first week, it was noted that activity A was completed in 2.5 days and activity B required 4.5 days What impact does this have on the project duration and critical path?(Type your answer in only two sentences) III. After completing the activity A in 2.5 days and the activity B in 4.5 days, are the same activities still critical? Type Yes or No in the box provided