Additional Information Items a. An analysis of WTI's insurance policies shows that $3,600 of coverage has expired. b. An inventory count shows that teaching supplies costing $3,120 are available at year-end. c. Annual depreciation on the equipment is $14,400. d. Annual depreciation on the professional library is $7,200. e. On September 1, WTI agreed to do five courses for a client for $2,400 each. Two courses will start immediately and finish before the end of the year. Three courses will not begin until next year. The client paid $12,000 cash in advance for all five courses on September 1, and WTI credited Unearned Revenue. f. On October 15, WTI agreed to teach a four-month class (beginning immediately) for an executive with payment due at the end of the class. At December 31, $11,700 of the tuition revenue has been earned by WTI. g. WTI's two employees are paid weekly. As of the end of the year, two days' salaries have accrued at the rate of $100 per day for each employee. h. The balance in the Prepaid Rent account represents rent for December,