Answer: Cash budget
Explanation:
The cash budget is the term which is used to define cash flow in the business as it helps in establishing a specific budget by proper analyzing on the outgoing flow and the inflow in an organization.
Th Cash flow is one of the important concept which is typically used by the various types of organizations for operating all the expenses and the the cash budget is used to avoid the problem of cash shortage.
According to the given question, the Cash budget is basically providing Charlie with some valuable data or information by proper estimation regarding the requirement of firm. Therefore, Cash budget is the correct answer.