A Small Machine Shop Produces Steel Shafts and Metal Plates

Multiple Choice

A small machine shop produces steel shafts and metal plates. The production process depends on labor, milling machine hours, and lathe machine hours. The firm tries to identify how many metal shafts and plates should be produced per week in order to maximize profit. Which, among the following, are the decision variables?

A) Profit contributions of shafts and plates
B) Maximum weekly labor hours available
C) Milling and lathe machine hours available per week
D) Quantities of shafts and plates produced per week
E) The total profit earned by the shop