Adjusting Cash Flows for Changes in Accounts Receivable Marshall inc. had beginining balances (January 1) of $320,000 and 18,000 for accounts receivable and the allowance for doubtful accounts, respectively. During the year, the company had the foliowing transactions. Note: indicate a subtraction in the Operating activities section wath a negative sign in the Amount columin. a. Determine the ending balance (December 31 ) in accounts receivable and the allowance for doubtful accounts