Under accrual accounting, determine when revenue and expenses should be recognized from the following a) Westjet Airlines sells you a non-refundable airline ticket in September for your flight home in December. Revenue for Westjet should be recognized in which month:________________ b) A furniture factory's employees work overtime to finish an order that is completed and sold on February 28th, The payment is received by mid-March. Costs for overtime wages should be expensed in which month:________________