Select all correct sentences regarding dual operating systems. a. At the centre of the accelerators that enable a network to function is creating and reinforcing a sense of urgency around an opportunity so employees wake up every morning determined to find an action that helps moving toward that opportunity. b. The network within a dual operating system, requires motivating and empowering people in the network to volunteer their energy and brain power for a common purpose. c. A dual operating system refers to a management-driven hierarchy working in concert with a network. d. Crucial for the dual operating system to work is to keep the information flow between the two systems separate