A goal succeeds, if there are facts (rules) that match or unify the goal. What are required in order for a goal clause and a fact to unify? Select all that apply. Group of answer choices they have the same number of arguments. their predicates are the same. their corresponding arguments match. their arity must be different.

How is a wan different than a lan? both connect computers, but only wan users don’t need the same operating system. both are peer-to-peer networks, but only a wan requires networking hardware. both network computers, but only a wan can cover larger geographical ranges. both connect computers to the internet, but only wan connects to the cloud.