A town's department of public works is concerned about adverse public reaction to a sewer project that is currently in progress. Because of this, the Commissioner of Public Works has authorized a weekly survey to be conducted of town residents. Each week, for a total of 10 weeks, a sample of 100 residents is questioned on their feelings towards the project. Number of responndets who opposed (each week, respectively): 8, 6, 22, 17, 16, 20, 10, 17, 10, 20.Analyze this data using an appropriate control chart (three sigma control limits). Is the community sentiment stable? a. Unstable, 3 observations out of control b. Stable c. Unstable, 1 observation out of control d. Unstable, 2 observations out of control