Answer the questions based on the following activity table.

a$)$ What is the minimum cost completion time for this project if the project's baseline cost accounts for the sum of activity costs as outlined. Additionally, a fixed cost of $$1,000$ per day for the project's duration is factored into the normal cost calculation. For any day an activity is expedited $($crashed$),$ the cost increases by the crash cost indicated, plus an additional $$500$ per day for expediting.

b$)$ Draw the time$-$cost tradeoff graph for this project and explain your answer for part a$.$

$($Hint: The crash costs represent the cost of a fully expedited activity. For example, reducing activity B from $13$ days to $12$ days, costs an extra $$100$ on top of the $$500$ expediting cost for a total cost of $$2,600.$ Reducing B from $13$ days to $10$ days, costs an extra $$300$ on top of the $$500$ expediting cost, for a total activity cost of $$2,800.)$

$\backslash$table$[[$Activity$,$Predecessor,$\backslash$table$[[$Normal$],[$Time$]],\backslash$table$[[$Normal$],[$Cost$]],$Crash Time,Crash Cost$],[$A$,,2,$$$2,000,2,$$$2,000$