(a) An accountant is wanting to close the Income Summary Account for the month. He notes that, for the month, total revenue is $353,050 (including GST) and total operating expenses is $286,000 (including GST, although this also includes expenses with no GST such as wages of $98,000 and depreciation of $50,000). Now, he will record the closing-off of the Income Summary Account. (2 marks) (b) Several months ago, a customer paid $29,900 (including GST) before they had received any services, but this was recorded as revenue by sales staff. By the balance date, the customer had received $21,850 (including GST) worth of services, and the accountant adjusted the accounts accordingly. Now, on the first day of the new accounting period, the accountant will prepare the reversing entry.