On what basis may a court exercising its power of judicial review set aside an administrative rule adopted by an agency?

A) The rule is beyond or outside of the scope of the agency's authority

B) The rule is unconstitutional

C) The proper procedure (i.e. formal and informal rulemaking) was not used to adopt the rule

D) All of the above

E) None of the above; the concept of "separation of powers" prevents the judiciary from reviewing an administrative rule for illegality or unconstitutionality.