Which of the following errors, each considered individually, would cause the trial balance totals to be unequal? A transaction was not posted. A payment of $1,500 to a creditor was posted as a debit of $5,100 to Accounts Payable and a credit of $5,100 to Cash. A payment of $100 for insurance was posted as a debit of $10 to Prepaid Insurance and a credit of $10 to Cash. Cash received from customers on account was posted as a debit of $1,000 to cash and a credit of $1,000 to Salary Expense