Compute the planned order using

$($a$)$ Use Wagner Whitin algorithm to compute the optimal production schedule. The setup cost $A=1000$$$,$ the unit holding cost $h=2$$

$($b$)$ If there are currently $120$ units on hand. Solve lot$-$for$-$lot and Fixed point order $($three weeks$)$

$\backslash$table$[[$Week$,1,2,3,4,5,6,7,8,9,10,11,12],[$Demand$,41,44,84,42,84,84,86,17,18,49,30,25]]$