Consider the software development activities which we described in Section $1\mathrm{.}4$ in

Chapter $1,$ Introduction to Software Engineering. Draw an activity diagram depicting

these activities, assuming they are executed strictly sequentially. Draw a second activity

diagram depicting the same activities occurring incrementally $($i$.$e$.,$ one part of the

system is analyzed, designed, implemented, and tested completely before the next part

of the system is developed$).$ Draw a third activity diagram depicting the same activities

occurring concurrently