A construction project is broken down into the following 10 activities: IMMEDIATE TIME ACTIVITY PREDECESSOR (WEEKS) 4 2 3 4 4 1 5 5 2,3 6 3 4 7 4 7 8 5 4 6.7 8 10 8.9 5 b-1. What is the critical path? O 1-4-7-9-10 O 1-3-8-9-10 O 1-2-5-8-10 1-3-5-8-10 b-2. How many weeks will the project take to complete? Number of weeks c. If activities 1 and 10 cannot be shortened, but activities 2 through 9 can be shortened to a minimum of one week each at a cost of $10,000 per week, which activities would you shorten to cut the project by four weeks? double click the box with the question mark to empty the box for a wrong answer.) Cut activity 4 by 3 weeks. and then reduce activity 7 or 9 by one week. Cut activity 6 by 4 weeks. Reduce activities 7 and 9 by a total of 3 weeks. and then reduce activity 4 by one week