Complete the following sentences. express their demand for public goods and services by voting, helping in political campaigns, lobbying, and making campaign contributions don't vote, but do make campaign contributions and are a major source of funds for political parties O A. Firms, Bureaucrats O B. Politicians, Firms O C. Voters, Bureaucrats O D. Voters, Firms are the elected persons in the federal, state, and local governments administer tax collection, the delivery of public goods and services, and the administration of rules and regulations O A. Politicians, Firms O B. Politicians, Bureaucrats O C. Bureaucrats, Voters O D. Bureaucrats, Politicians