Differentiate retrospective reimbursement methodologies from prospective reimbursement methodologies.
A) Retrospective focuses on future costs, while prospective looks at past expenses
B) Retrospective reimburses after services are provided, while prospective pays in advance
C) Retrospective considers historical data, while prospective uses estimated costs for upcoming services
D) Retrospective is based on projected budgets, while prospective relies on actual expenditures
