Answer:
a. controllable margin
Step-by-step explanation:
CONTROLLABLE MARGIN can be defined or seen as the margin that help to effectively and efficiently measures and evaluate manager performance .
Hence, we can say that CONTROLLABLE MARGIN are financial measures of performance which a company or an organisation need to control their revenue as well as their cost reason been that all costs are controllable by the profit center manager.
Therefore CONTROLLABLE MARGIN can be calculated as :
Controllable margin = Contribution margin-Controllable fixed cost.
Therefore the financial measures of performance is called CONTROLLABLE MARGIN.