Three of the basic measurements used by the Theory of Constraints (TOC) are:

    A) Fixed manufacturing overhead per unit, fixed general overhead per unit, and unit gross margin (or gross profit). B) Gross margin (or gross profit), return on assets, and total sales. C) Number of constraints (or subordinates), number of non-constraints, and operating leverage. D) Throughput (or throughput contribution), inventory (or investments), and operational expense.