(a) Explain the meaning of 'variance' together with an interpretation of 'favourable' and 'adverse' variances. (6 Marks) (b) You have been asked to investigate variances that took place during the month. Identify the five (5) main criteria that guide an investigation of variances and explain why each criterion is useful in providing this guidance. (5 Marks) (c) Guided by the above criteria, identify five (5) variances in the above reconciliation statement that require further investigation and explain potential causes of each variance. (9 Marks)