The balances of the allowance for doubtful accounts on the balance sheets dated December 31 of 2009 and 2010 were $7,000 and $2,000, respectively. During 2010, bad debts expense was $12,000. What is the amount of accounts receivable that were written off as uncollectible during 2010?

Group of answer choices

$17,000

$8,000

$22,000

$2,000