A prospective seller, Seller XYZ, calls you to discuss the pricing contained in the response they previously provided to you. Seller XYZ is also a large customer of your company, and has been a long-time supplier to your company with superb performance. You would really like to see XYZ win the business for your project. As the Procurement Manager, you have visibility to all of the pricing provided by other prospective sellers. During the discussion, Seller XYZ asks you for “guidance” on their pricing so that they can be competitive with the other prospective sellers. How do you respond to Seller XYZ? Explain your thought process in formulating your response and, if appropriate, reference one or more relevant codes of ethics that may apply to this situation.