What Should Be Used Immediately After a Business Continuity Plan

What should be used immediately after a Business Continuity Plan (BCP) has been invoked?

A) Emergency procedures describing the necessary actions to be taken following an incident which jeopardizes business operations
B) Fallback procedures describing what actions are to be taken to move essential business activities to alternative temporary locations
C) Maintenance schedule specifying how and when the plan will be tested and the process for maintaining the plan
D) Resumption procedures describing the actions to be taken to return to normal business operations