For each of the following situations, would GAAP require that revenue be recognized: at the start of the period; at the time of delivery of goods or services; evenly during a period of time; or at the end of the period? Explain your answers.

A. A manufacturer sells electronics products like televisions to retail stores. It gives the retail stores 60 days to pay for the electronics. The company is able to predict collections with reasonable accuracy.

B. A book publisher sells books to retail bookstores, and allows the bookstores to return any unsold books within 60 days for full credit. A presidential candidate has just written a book, and the publisher is printing and shipping a million copies. No one knows how popular the book will be. Should revenue be recognized at the date of shipment or should it be recognized only after the 60-day period is past?
C. A company provides computer support services. It collects payment in advance, and provides support as needed over a 12-month period.