4. Based on the following selected data, journalize the adjusting entries as of December 31 of the current year:

A. Estimated uncollectible accounts at December 31, $16,000, based on an aging of accounts receivable. The balance of Allowance for Doubtful Accounts at December 31 was $2,000 (debit).

B. The physical inventory on December 31 indicated an inventory shrinkage of $3,300.

C. Prepaid insurance expired during the year, $22,820.

D. Office supplies used during the year, $3,920.

E. Depreciation is computed as follows:

Asset	Cost	Residual Value		Acquisition Date	Useful Life in Years	Depreciation Method Used
Buildings	$900,000	$0		January 2	50	Double-declining-balance
Office Equip.	246,000	26,000		January 3	5	Straight-line
Store Equip.	112,000	12,000		July 1	10	Straight-line

F. A patent costing $48,000 when acquired on January 2 has a remaining legal life of 10 years and is expected to have value for 8 years.

G. The cost of mineral rights was $546,000. Of the estimated deposit of 910,000 tons of ore, 50,000 tons were mined and sold during the year.

H. Vacation pay expense for December, $10,500.

I. A product warranty was granted beginning December 1 and covering a one-year period. The estimated cost is 4% of sales, which totaled $1,900,000 in December.

J. Interest was accrued on the note receivable received on October 17.