Gringo's Restaurant is a small restaurant located in a Mesa, Arizona, neighborhood shopping center that has a grocery store $($chain$)$ as its anchor tenant. Carl Williams owns Gringo's and has just negotiated its sale to Wilma Freestone. The covenant not to compete provides that Williams will not open a competing restaurant anywhere within the U$.$S$.$ The noncompete is:

too restrictive and is a violation of the Sherman Act.

not subject to review so long as it is part of the sales contract.

probably reasonable and enforceable.

probably not enforceable