Time Estimates (in weeks) for SOM's Bus Project is given in the following table. Activity A Optimistic time 2 Pessimistic time Most likely time 4 6 B 3 5 8 C 4 6 8 3 5 10 Please help the project management team to find the standard deviation of Activity D. keep two decimals if not exact, either round up or down is ok. For example, for 0.1346, (0.13 or 13) and (0.14 or 14) are correct