The following data are for Trendy Fashion Apparel:

$.$

$\backslash$table$[[,$North,South$],[$Sales volume $($units$)$:$,,],[$Blouses$,5,374,4,053],[$Skirts$,3,214,7,898]]$

Sales price per unit:

Blouses

Skirts

$$20$$$18$

$$17$$$19$

Variable cost per unit

Blouses

Skirts

$$8$

$$8$

$$13$

$$13$

Determine the contribution margin for the following:

a$.$ Skirts $

b$.$ The South Region $