As a leader of innovation you know that creating open innovation in a company can be exciting and challenging. Based on our readings and class discussions, which is of the following actions can be used to sustain open innovation and engage employees to offer their ideas over a longer period of time? A. Setting up a special internal "Innovation Council" to management global open innovation. B. Setting a long-term calendar for employees so that they have visibility into the needs of the organization. C. Setting up special internal team versus external team competition events. D. Setting up special events with management consultants