Which of the following DOES NOT relate to a flexible budget? (i) It cuts across functional areas to bring together all budgeted costs for a cost objective. (ii) It covers a range of volumes within which the firm may operate. (iii) It is based on activities rather than on expense categories such as direct labour and manufacture overhead. a. (i) and (iii) only b. (i), (ii) and (iii) c. (i) and (ii) only d. (ii) and (iii) only