InnovAI Solutions, a multinational corporation specializing in advanced analytics, is rapidly integrating AI into its core business processes, from customer relationship management to supply chain optimization. The executive leadership recognizes the potential benefits of AI but is also aware of the associated risks and ethical considerations. Several proposals have been put forward regarding the governance structure for AI within the organization. One suggestion is to delegate AI governance to the existing corporate governance committee. Another is to establish a strict \"command-and-control\" governance model with centralized decision-making. A third proposal suggests forming an AI ethics review board with limited decision-making power. Considering the need for comprehensive oversight, accountability, and ethical alignment, which of the following approaches represents the BEST strategy for establishing AI governance at InnovAI Solutions?