please answer question c and d.

Metlock Company reports the following financial information before adjustments. Prepare the journal entry to record bad debt expense assuming Metlock Company estimates bad debts at (a) 4% of accounts receivable and (b) 4% of accounts receivable but Allowance for Doubtful Accounts had a $1,410 debit balance. (c) What would be the amount of net accounts receivable reported on the balance sheet if part (b) was used to estimate bad debts? (d) When a specific account is deemed uncollectible, what journal entry would be needed