What Is the Best Example of Skilled Negotiation

What is the best example of skilled negotiation?

A) Linda, the manager on pediatrics, takes a proposal to her supervisor, outlining the benefits of a walk-in preoperative area for children.
B) Kim, RN, asks for leave to pursue a semester of full-time study in her graduate program. She proposes to accept less popular rotations during peak vacation time, in return.
C) George, the head nurse in ER, asks for additional staff for his department and points out the benefits of being able to keep patients for longer periods.
D) Jerry speaks with his supervisor about his supervisor's concerns related to bedside reporting before presenting a proposal to change this process.