Burne Building Services offers janitorial services on both a contract basis and an hourly basis. On January 1, Burne collected \(\$ 90,000\) in advance on a six-month contract for work to be performed evenly during the next six months.

a. Provide the general journal entry on January 1 to record the receipt of \(\$ 90,000\) for contract work.

b. Provide the adjusting entry to be made on January 31 , for the contract work done during January.

c. At January 31, a total of 35 hours of hourly rate janitor work was unbilled. The billing rate is \(\$ 31\) per hour. Provide the adjusting entry needed on January 31. The firm uses the account Fees Receivable to reflect amounts due but not yet billed.