Match the below items:

A bar code checkout system at a grocery stor that is used to gather sales information.

IT$+$Business $+$ People

Excel "what if$"$ spreadsheet models used by management to simulate different semistructured or unstructured scenarios related to applications such as demand forecasting and capacity planning. These systems require some user interaction and human judgment.

A system that applies knowledge and reasoning $($and an "inference engine"$)$ to help diagnose or solve a problem. An example of this could be a DELL employee troubleshooting some computer hardware problem for a customer over the phone using a database and software based on $"$IF$...$THEN" rules.