Assistance in completing this. i cant figure it out. not sure what the letters are either. can someone explain it to me?

Required information [The following information applies to the questions displayed below] Wells Technical Institute (WTi) provides training to individuals who pay tuition directly to the school. WTI aIso offers trainin to groups in off-site locations. WTI initially records prepaid expenses and unearned revenues in balance sheet accounts. Its unadjusted trial balance as of December 31 follows, along with descriptions of items a through h that require adjusting entries on December 31 Additional Information Items a. An analysis of WTis insurance policies shows that $3,468 of coverage has expired. b. An inventory count shows that teaching supplies costing $3,006 are available at year-end c. Annual depreciation on the equipment is $13,871. d. Annual depreciation on the professional library is $6,936 : e. On September 1. WTI agreed to do five training courses for a client for $2,200 each. Two courses wili start immediately and finish before the end of the year. Three courses will not begin until next year. The client paid $11,000cash in advance for all five training 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,$11,548 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. -a. Post the balance from the unadjusted trial balance and the adjusting entries into the T-accounts -b. Prepare an adjusted trial balance. 1. Required information 1) Required information