In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, now part of ASC 606 (FASB2014a). One of the most significant revenue sources for Alibaba Group is revenue from pay-per-click advertising services. Apply the five steps in the revenue recognition model of ASC 606 to account for revenue from pay-per-click advertising services. Prepare the necessary journal entries. (Ignore any transaction amounts in the journal entries.)