The income statement approach to estimating uncollectible accounts expense is used by Landis Company. On February 28, the firm had accounts receivable in the amount of $437,000 and Allowance for Doubtful Accounts had a credit balance of $2,140 before adjustment. Net credit sales for February amounted to $2,500,000. The credit manager estimated that uncollectible accounts expense would amount to 1% of net credit sales made during February. On March 10, an accounts receivable from Kathy Brown for $6,100 was determined to be uncollectible and written off. However, on March 31, Brown received an inheritance and immediately paid her past due account in full. Required: 1) Prepare the journal entries made by Landis Company on the following dates: February 28 . March 10 . March 31 Assume no other transactions occurred that affected the allowance account during March. Determine the balance of Allowance for Doubtful Accounts at March 31 2)