Accounts Receivable Beg. bal. 17,800 (a) End. bal. (c) 900 Allowance for Doubtful Accounts 54,900 (b) Beg. bal. 1,800 Unadj. bal. 900 (d) End. bal. (e) D Sales 77,200 Bad Debts Expense All sales were on credit, with some accounts receivable collected in cash subsequently. There was no recovery once an account was written of Uncollectible accounts were estimated at $1,980 at year end. Instructions Determine the missing amounts of (a), (b), (c), (d), (e), and (f). Hints: It may be helpful to reconstruct the journal entries