ABC Project Organization Has One Workstation That Is Capable of Generating

ABC project organization has one workstation that is capable of generating the drawings that their clients study before accepting ABC's bid.ABC is currently in the midst of three proposal projects and knows which proposed project will be most profitable and which will be least profitable.The workstation is scheduled so that the most profitable project's work is done first and the least profitable project work is done last.This is an example of:

A) identifying a constraint.
B) exploiting a constraint.
C) elevating a constraint.
D) subordinating a system.