Need help with B and C, showing step by step on how to get the answers. thank you!!

Management Decision Systems (MDS) is a consulting company that specializes in the development of decision support systems. MDS has a four-person team working on a current project with a small company to set up a system that scrapes data from collection of websites and then automatically generates a report for management on a daily basis. Time (Weeks) Activity A B Description Report generation Web scraping Immediate Predecessor This answer has not been graded yet. Optimistic A, B 2 Testing (a) Construct the project network. (Submit a file with a maximum size of 1 MB.) Browse... No file selected. 4 Most Probable 1 8 9 1 Pessimistic 12 11 1 (b) Based solely on the critical path, estimate the probability that the project will be complete within 11 weeks. (You may need to use the appropriate technology to answer this question. Round your answer to four decimal places.) (c) Using all paths through the project network, estimate the probability that the project will be complete within 11 weeks. (You may need to use the appropriate technology to answer this question. Round your answer to four decimal places.)