Which agreement is most likely to be legal? A. A grocery store's employment contract prohibiting its full-time accountant from working as an accountant for any business for a year after the accountant's employment with the grocery store ends. B. An Illinois landscaping company's employment contract prohibiting the gardeners its employs from working for landscaping companies, garden stores, or florist shops in Illinois for three months after their employment with the landscaping company ends. C. An architectural firm's employment contract prohibiting the architects it employs from providing the same kind of services to the firm's direct competitors for six months after their employment with the firm ends. D. A sign at a bar stating that, by entering the bar, customers agree to waive any legal claims they may have against the bar for any injuries that the bar's staff may recklessly or even intentionally cause to the customers.