Eloise plans to build an addition on her house that she will operate as a bed and breakfast. The town rejects her plans on the grounds that she must first purchase from the town an expensive commercial building permit. Eloise argues that she is just modifying her own residence and that she owned the residence before the commercial permit legislation was passed; she argues that, therefore, does not need the expensive permit. At the court hearing on her case, the town mayor serves as judge. This is:
a. proper procedural due process because Eloise has a chance to be heard.
b. a violation of the Commerce Clause.
c. a violation of procedural due process requirements.
d. a violation of substantive due process requirements.