During a company-wide audit, you find that your company's management relations policies are not clearly defined. As an HR manager, you know that certain aspects of labor relations are regulated by a federal agency. Which agency is responsible for regulating labor and management relations, and how should you ensure compliance? 1. The National Labor Relations Board (NLRB) regulates all aspects of labor relations, and you should ensure company policies are aligned with NLRB guidelines. 2. The National Labor Relations Board (NLRB) has no role in labor relations, and no action is needed. 3. The Department of Labor regulates labor relations, and you should refer to their standards. 4. Labor and management relations are self-regulated and do not require adherence to any federal agency guidelines