Use the following adjusted June 30 trial balance for Atwell Laboratories, Inc., to answer the questions that follow. ATWELL LABORATORIES, INC. Adjusted Trial Balance June 30 Debits Credits Cash $800 Accounts receivable Prepaid insurance Supplies Equipment 7,360 3,600 5,040 216,000 Accumulated depreciation-equipment $72,000 Accounts payable 2,480 Rent payable 1,600 Wages payable 480 Contract liability 800 Fees revenue 122,400 Wages expense 46,880 Rent expense 19,200 Insurance expense 1,200 Supplies expense 20,000 Depreciation expense 24,000 Common stock 96,320 Retained earnings 48,000 Totals $344,080 $344,080 Required a. Prepare Atwell's closing journal entries. Account Name Debit Credit (a) 0 0 0 0 0 0 0 0 0 0 To close expenses to retained earnings. (b) 0 0 0 0 To close revenues to retained earnings.