An aging of a company's accounts receivable indicates that the estimate of uncollectible accounts totals $3,519. If Allowance for Doubtful Accounts has a $988 debit balance, the adjustment to record the bad debt expense for the period will require a

a.credit to Allowance for Doubtful for $3,519.

b.debit to Allowance for Doubtful Accounts for $4,507.

c.debit to Bad Debt Expense for $4,507.

d.debit to Allowance for Doubtful Accounts for $3,519.