Prist had not provided a warranty on its products, but competitive pressures forced management to add this feature at the beginning of 2013. Based on an analysis of customer complaints made over the past two years, the cost of a warranty program was estimated at 0.3% of sales. During 2013, sales totaled $4,213,000. Actual costs of servicing products under warranty totaled $23,900. Actual costs of servicing products under warranty totaled $9,700. Required:
a. Use the horizontal model (or a T-account of the Estimated Warranty Liability) to show the effect of having the warranty program during 2013.
b. What type of accrual adjustment should be made at the end of 2013?
c. Describe how the amount of the accrual adjustment could be determined.