When Asked to Decide the Issue of Public Utilities and How

When asked to decide the issue of public utilities and how they communicate with their customers through bill stuffers, the U.S. Supreme Court has made which of the following determinations?

A) because they are regulated monopolies, public utilities do not have free speech rights and their communication to their customers can be regulated by the government
B) it's a free speech issue; how companies choose to communicate to their customers cannot be regulated by the government
C) public utilities can communicate with their customers through bill stuffers but must provide opportunities for opposing viewpoints to be included in future bill stuffers
D) this is a trick question, as the Supreme Court has never addressed this issue