The central guidance of the budget process is the responsibility of the:

Budget committee: It plays a vital role in the preparation of budgets. It includes the executives, who are in charge of major functions of the business like the HRD manager, production manager, finance manager, sales manager, chief engineer, the treasurer and the chief accounts officer The main functions of the budget committee are outlined below Making policies and objectives of the company Receive and review budget estimates of different departments/units/divisions . Suggest changes and modifications in accordance with objectives of the organization. Approve budgets which act as an authority/target for departmental action .Receive and analyze performance reports regarding the budget implementation Suggest corrective action to improve efficiency and achieve budgetary goals. Therefore, the answer is Option D Budget committee.