A business impact analysis is used to help management and the business continuity planner decide:

Comprehensive Detailed Explanation:

A Business Impact Analysis (BIA) identifies and prioritizes critical business functions that are essential to the survival and continuity of operations. The results of the BIA help guide recovery strategies, resource allocation, and business continuity planning.

A (Budget) and B (Personnel allocation) are determined later, informed by the BIA.

C (Number of hot sites) is a strategic outcome but not the direct purpose of the BIA.