Why Are Flexible Reward Systems Becoming an Increasingly Popular Form

Why are flexible reward systems becoming an increasingly popular form of compensation systems?

A) Employees value flexible reward systems and may develop strong loyalty and attachment to an employer who provides them.
B) The flexible reward system allows the organisation to trade off salary increases for benefit increases as ways of rewarding the employee.
C) Flexible reward systems allow the organisation to standardise the benefits package for all employees.
D) Organisations get fewer benefits for their rand than they do with standard approaches, but their employees are more satisfied.
E) Flexible systems require less administrative time to develop and maintain than conventional approaches.