Which of the following would most likely be a weakness in internal control of a client that utilizes microcomputers rather than a larger computer system

a. Employee collusion possibilities are increased because microcomputers from one vendor can process the programs of a system from a different vendor.

b. The microcomputer operators may be able to remove hardware and software components and modify them at home.

c. Programming errors result in all similar transactions being processed incorrectly when those transactions are processed under the same conditions.

d. Certain transactions may be automatically initiated by the microcomputers, and management's authorization of these transactions may be implicit in its acceptance of the system design.