Which statement best describes incremental budgeting? O A. The budget is prepared in a piecemeal manner with each department adding its input in turn OB. The budget is prepared by the board of directors using the previous year's targets plus a fixed percentage OC. The budget is prepared 'bottom up' by each department increasing its targets by al percentage fixed by the board of directors OD. The budget is prepared by considering changes in activity levels from the previous period rather than starting from a zero position