What is true about rule based systems? Indicate all that are true.

Group of answer choices

A rule$-$based system is a way of encoding a human expert's knowledge in a fair$-$ly narrow area into an automated system.

All of the answers are correct.

The definitions of rule$-$based system depend almost entirely on expert systems.

None of the answers are correct.

A rule based system uses rules as the knowledge representation for knowledge coded into the system.