our client, Ventana Publications, is an accrual basis, calendar-year corporation. Ventana publishes and sells monthly lifestyle magazines to retail bookstores and newsstands. Ventanas standard sales agreement allows retailers to return any unsold magazines to Ventana during the 30-day period after the date of purchase. Ventana will then refund 75% of the purchase price for all returned magazines. During January 2024, Ventana refunded $59,000 to retailers that returned magazines purchased in December 2023.\ \ \ \ Ventana has asked you whether it can reduce its 2023 taxable income by the amount of the refund paid in 2024. Use tax research resources available in Checkpoint to locate the relevant Internal Revenue Code section. Which of the following citations provides the applicable rule for this scenario?