$[$B$]$ Anticipated demands for a four$-$period planning horizon are $23,86,40,$ and $12.$ The setup cost is $$300$ and the holding cost is h $=$ $$3$ per unit per period.

Determine the solution provided by the following methods and the associated total costs.

$($a$)$ The lot$-$for$-$lot scheme

$($b$)$ The EOQ lot sizing method

$($c$)$ The Least Unit Cost $($LUC$)$ method

$($d$)$ Which method provides the minimum total cost?