green 4. Monthly account activity analysis: The monthly account activity analysis provides monthly account activity for the selected account or account class. This information is used to understand the business; the nature of and accounting for transactions; and to investigate unusual or unexpected relationships, trends, changes or transactions to identify risks and obtain substantive evidence. This analysis provides comparisons of account activity by month across years. a) For which month is there the largest difference in net revenue (all revenue accounts) between FY15 and FY16? April