The four-frame model of diagnosing change stems from the belief of its inventors that leaders in organizations must ?     A-understand that not everyone in an organization is ready to be asked to step up to the plate as a change agent.
       B-review the landscape, picture the new landscape, mold the new landscape, and freeze the new landscape.
       C-stop using the human resource department as change managers.
       D-accept that project managers may be the best change agents for all organizations.
       E-unlock their perceptions, review their biases, and reinterpret the organization through different lenses without "blind spots".