Epperson Company started in business during 2020. During that year, Epperson collected $66,000 in cash from sales. At the end of the year, Epperson had a balance in accounts receivable of $2,000, and $1,000 in unearned revenue. How much were Epperson's total sales during 2020? $69,000 $65,000 $68,000 $67,000 None of the above