Suppose the demand for the next $3$ weeks are given in the table.

$\backslash$table$[[$Period$,1,2,3],[$Demand$,30,20,10]]$

The fixed setup cost is $$100$ and the inventory cost is $$1$ per unit per week. Use the $W-W$ procedure to complete the following table.

$\backslash$table$[[\backslash$table$[[$Last period with$],[$Production$]],$Planning Horizon t$],[1,2,3],[1,100,$A$,],[2,,200,140],[3,,,?$