N Given the information in the table, how many weeks activity D could be delayed without ?delaying the completion time of the project 2 (2 ) Activity Immediate Predecessors Normal Cost ($) Crash Cost () Normal Time (weeks) 8 3 7 3 3 6 2 B D E F G Crash Time (weeks) 6 2 5 1 2 AB 4000 2000 2000 3000 1000 2000 1500 6000 2500 3000 3500 1500 3500 2500 D EF Two activities are candidates for crashing on a PERT network. Activity details are in the table below. To cut one day from the project's duration, activity should be crashed .first, adding to project cost (2 (2 ) Activity Normal Time Normal Cost (day) (S) A 4 6,000 B 6 4.000 Crash Time (day) 2 4 Crash Cost (S) 7,000 6,000 A; $1,000 a A; $500 a B; $1,000 B; $500 O