Which Statement Most Accurately Describes How Discipline in a Unionized

Which statement most accurately describes how discipline in a unionized organization may vary from one that is nonunionized?

A) Nonunionized organizations require a demonstration of just cause, whereas unionized organizations do not
B) Discipline in nonunionized organizations tends to entail more procedural, legalistic safeguards than unionized organizations
C) Only unionized organizations have grievance procedures
D) Unionized employees must generally be disciplined according to specific steps and penalties within an established time frame