Which of the Following Would Be Considered a Reasonable Restraint-Of-Trade

Which of the following would be considered a reasonable restraint-of-trade?

A) Ginny promises Tibbs that she would never sell the car that he sold to her.
B) Timothy sells a café to Ron and promises not to open a competing café for the next five years.
C) Julie gets a job in a hotel, which requires her to sign a bond that prevents her from working in any other hotel for a period of one year until resignation.
D) Libby sells her pet store to Nina and promises not to open a competing pet store in town for one year.
E) Rosh threatens to fire his housekeeper if he does not show up for work Christmas Eve.