$14-20$ Custemer prefitability, eustemer$-$cest hierarehy. Orsack, Electronics has only two retail and two wholesale customers. Information relating to each customer for $2012$ follows $($in thousands$)$:

$\backslash$table$[[,$Hest.,meen,Proe Laysut,Formules,mow vies$],[,,$A$.,$B$,$C$,$D$,$E$],[1,,,$Wholesale Customers,Retail Customers$],[2,,,\backslash$table$[[$North America$],[$Wholesaler$]],\backslash$table$[[$South America$],[$Wholesaler$]],\backslash$table$[[$Big Sam$],[$Stereo$]],\backslash$table$[[$World$],[$Market$]]],[3,$Revenues,at list price,$$435,000=,$$$550\mathrm{.}000,$$$150,000,$$$115,000$