A corporation cannot ratify an unauthorized act committed by its corporate officer

An elderly mother has moved to a nursing home and wants her son to sell her home. To act as the agent of the mother, the son would need:

A. A deed signed by the mother. B. A power of attorney signed by the mother. C. A listing agreement signed by the son. D. A power of attorney signed by the son

Expert systems model human knowledge as a set of rules that collectively are called the ________ base

A) knowledge B) data C) inference D) experience E) rationale