5. Optional Question: Consider the project network shown below. Think about fast- tracking in the absence of resource constraints. Suppose activities 5-8 and 8-12 can be done in parallel. At what level of parallelization is the original critical path no longer the only critical path? Critical Path (ignoring resource availabilities) (8,8) (15,15) (3,3) 5 6 2 5 8 3 (0,0) 2 (11,13) (21,21) 4 (9,11) 2 8 (5,7) 6 12 Original 2 2 10 (3,17) (5,19)