Consider the following project network and activity time in days. A 12 D 95 Start B 14 B4 E F6 Finish C 8 G 10 Normal Crash Normal Crash Activity Time Time Cost Cost 485460 ABCDEFG 12 8 8,000 12,000 14 10 18 5,000 7,500 10,000 10,000 3 6,000 8,000 10 358 5,000 7,000 9,000 12,000 5,000 8,000 a. (5) Find the critical path and the expected project duration time using normal times. b. (5) What is the total project cost using the normal times