Not sure if i am correct

1)Which of the following is a reason for a company to use flexible budgeting? A)Most of the comapny's costs are fixed. B)Budgeted and actual output levels are invariably the same. C)It is not possible to distinguish between fixed and variable costs. D)There will be differing sales volumes due to uncertainity in the environment. Answer-B 2)Which of the followng describes the method of payment for labour known as "piecework"? A)A fixed amount is paid per unit of time spent,based on output achieved. B)Afixed amount is paid per unit of output achieved,based on time spent. C)A fixed amount is paid per unit of outpu achieved,irrespective of time spent. D)Afixed amount is paid per unit of time spent, irrespective of output achieved. Answer-C 3)What is the main role of the budget committee? A)Reporting actual results in comparision to the budget. B)Preparation of the functional. C)Calculation of the flexibe budget. D)Coordination and administration of the budget process. Answer-D I just to know am I correct. THANK YOU SO MUCH SIR IN ADVANCE :)