Problem 4-1A The trial balance columns of the worksheet for Warren Roofing at March 31, 2017, are as follows. WARREN ROOFING Worksheet For the Month Ended March 31, 2017 Trial Balance Dr. 4,000 2,700 1,300 10,560 Account Titles Cr Cash Accounts Receivable Supplies 1.200 2,000 400 11,460 Accounts Payable Unearned Service Revenue Owner's Capital Owner's Drawings Service Revenue Salaries and Wages Expense Miscellaneous Expense 1.000 6,000 1,000 300 21,060 21,060 Other data 1. A physical count reveals only $400 of roofing supplies on hand. 2. Depreciation for March is $240 3. Unearned revenue amounted to $150 at March 31 4, Accrvued salaries are $600