Expert systems are designed to mimic the skills of a human expert so more people can benefit from that expertise without having to pay the high cost associated with using the services of a human expert. Which of the following is an example of an organization using an expert system that provides a direct benefit to their customer's?

The University of Kentucky developed an expert system to teach math and evaluate students' math skills so that students could learn and demonstrate required math skills without having to take traditional courses that would cost them more in tuition.

IBM developed an expert system to assist in training their technicians which has resulted in reduced raining time. Since IBM must pay their technicians to go through training but the technicians are not earning money for the company while they are in training the expert system provides IBM with significant cost savings.

The Internal Revenue Service has developed expert systems to evaluate tax returns and identify mistakes or missing information on those returns. This has resulted in increased tax revenues for the Federal government while reducing the IRS's labor costs.

Campbell's Soup Company developed an expert system to capture expertise that a highly specialized, Jong$-$time employee had about plant operations and sterilizing techniques. This allowed the company to pass that knowledge on to new employees even after the expert employee retired.