I need help with C & E!!! Thanks

The following table represents a plan for a project: JOB NO. PREDECESSOR TIMES (DAYS) JOB(S) a m b 1 3 8 2 9 1 1 4 1 2 3 4 5,6 8 7 9,10 2. 3 3 2 1 3 5 4 2 5 6 3 4 4 6 10 11 7 b. Indicate the critical path. O 1-4-7-10-11 O 1-3-6-8-9-11 O 1-2-5-8 O 1-2-5-8-9-11 c. What is the expected completion time for the project? (Round your answer to 2 decimal places.) Expected completion time days d. You can accomplish any one of the following at an additional cost of $2,000 and if you will save $1,500 for each day that the earliest completion time is reduced, which action, if any, would you choose? 1. Reduce job 5 by two days. O Yes O No 2. Reduce job 3 by three days. O No Yes 3. Reduce job 6 by two days. O Yes O No e. What is the probability that the project will take more than 29 days to complete? (Round your answer to 2 decimal places.) Probability