A Covenant Not to Compete Is a Device,ancillary to Another

A covenant not to compete is a device,ancillary to another agreement (such as an employment contract) ,that is designed to protect a company's interests.Which of the following would NOT be within the scope of a noncompete clause?

A) Preventing an employee from revealing proprietary information about clients
B) Limiting a former employee's ability to use trade secrets when working for a competitor
C) Limiting the area in which a former employee can set up a competing business
D) Limiting a former employee's ability to hire away colleagues or take clients from the former employer