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Question III (20 points) Excalibur, Inc., is a London-based recording studio. Excalibur use the studio to mix demo recordings distributed to musicians. New clients are required to pay in advance for studio services. Excalibur with established credit are billed for studio services at the end of each month. The company performs adjusting entries on a monthly basis, whereas closing entries are prepared annually on December 31. An unadjusted trial balance dated December 31,2020 is as follows. Information for adjusting entries: (a) Records show that $4,400 in studio revenue had been earned but not yet billed or recorded as of December 31, 2020. (b) Studio supplies on hand on December 31, 2020 amount to $6,900. (c) On August 1, 2020, the studio purchased a six-month insurance policy (the only insurance policy as of December 31,2020 ). (d) The studio prepays rent quarterly. The latest payment of $6,000 was made on November 1, 2020. (e) The useful life of the studio's recording equipment is estimated to be five years with no scrap value. The straight-line method of depreciation is used. (f) On May 1,2020, the studio borrowed $16,000 by signing a 9-month notes payable to First Federal Bank of St. Louis with an interest rate of 9% per annum. The entire principal plus interest will be due in full next year. (g) Records show that $3,600 of the customers' advanced payments had already been earned as of December 31, 2020. Required Record the adjusting entries for the month ended December 31,2020