Which of the following industries would most likely evolve into a monopoly?
A. Retail electrical service in the Portland-Hillsboro metropolitan area.
B. Growing cannabis in Oregon under state law but in violation of federal law
C. Operating 24/7 convenience stores on 82nd Avenue in Portland, OR.
D. Commercial and residential construction in Newberg, OR.
E. None of the industries in A—D are likely to evolve into a monopoly.