When an administrative rule has been properly promulgated under the Administrative Procedures Act, what effect does it have?

When an administrative rule has been properly promulgated under the Administrative Procedures Act, what effect does it have?

A. It has the same force and effect as a statute passed by the legislature.

B. It has an effect only on the particular parties involved but not on the public at large.

C. It takes effect within the agency but not outside of the agency.

D. It has no effect, since administrative agencies usually are not given rule-making authority.