When compared with parallel simulation, which of the following is most likely to be a disadvantage of the CIS concurrent auditing technique?

a. It is more difficult to implement because it is intended for use in an online rather than a batch processing environment

b. It requires more program instructions to implement in an application system than parallel simulation

c. It generates more input/output overhead in an application system than parallel simulation

d. The CIS exception log is more difficult to maintain than the parallel simulation exception \(\log\)