Utilization of a Constrained Resource

The Swore and Bore production facility in Calgary, Alberta specializes in soft$-$touch keyboards. There are $3$ keyboards that they produce: The $"$SBD$",$ "Incognito", and "StealthTech". All $3$ keyboards are assembled manually using direct labour. Due to a very competitive labour market, direct labour is Swore and Bore's main constrained resource. Because labour is difficult to attain, you have been asked to determine the priority of production.

$\backslash$table$[[,$Keyboard$],[$Selling Price,SBD$,$Incognito,StealthTech$],[$Variable Costs:,$$190,$$$210,$$$220$