22. The revenue realization principle requires four conditions to be met. Which of the following is one of the four conditions? A. The customer has paid for the goods or services. B. Delivery of goods or performance of service has occurred or is scheduled to occur. C. The price is fixed or determinable. D. The customer has signed a contract. 22. The revenue realization principle requires four conditions to be met. Which of the following is one of the four conditions? A. The customer has paid for the goods or services. B. Delivery of goods or performance of service has occurred or is scheduled to occur. C. The price is fixed or determinable. D. The customer has signed a contract