If a sale is listed on a sales invoice it generally must have been a cash sale. True False Question 9 (2 points) An adjusted trial balance is used to prove the equality of debit and credit balances in the general ledger accounts after the adjusting entries have been posted. True False Question 10 ( 3 points) Net Sales minus Cost of Goods Sold is called Gross Margin or Gross Profit. True False Question 11 (2 points) Sales Returns and Allowances is debited for the selling price, not including sales tax, of any merchandise returned by customers. True False Question 12 (2 points) If the terms specified on an invoice are 2/10,n/30, this means that a discount of 2% will be allowed if payment is made within 10 days from the date