$6\mathrm{.}10$ Consider a company facing a demand pattern

and costs as follows: $($first $6$ months$)$

Using a "three$-$month" decision rule, the replenishment schedule and associated costs are as follows:

Total replenishment costs $,$$$100\mathrm{.}00$

Total carrying costs $,$$$156\mathrm{.}00$

Total replenishment $+$ carrying $,$$$256\mathrm{.}00$

a$.$ Construct a replenishment schedule and calculate the associated costs using the Fixed Economic Order Quantity method.

b$.$ Repeat using the Wagner$-$Whitin Algorithm.

c$.$ Repeat using the Silver$-$Meal Heuristic.

d$.$ Repeat using the Least Unit Cost method.

e$.$ Repeat using the Part$-$Period Balancing method.

f$.$ Repeat using the Periodic Order Quantity

method.