Which of the following scenarios is most consistent with an "entitlement approach" to performance management? a. Employees receive annual performance evaluations which are tied to whether they receive a merit increase, and if so, how much of an increase. b. Sales employees' compensation includes commissions based on monthly sales. c. All the factory employees in a unionized company receive an annual 2% cost-of-living pay increase. d. Employees on a factory assembly line are paid by a "piece-rate" system based on the quantity of units they assemble.