Answer:
Option D Allowance for noncollectable Accounts.
Explanation:
The bad debt recovery recording is a two step process.
Step 1 Reverse the entry of bad debt with the amount received
Dr Trade Receivable $40,000
Cr Bad debts $40,000
Step 2 Now record the receipt of amount as a reduction in trade receivable and increase in cash asset.
Dr Cash $40,000
Cr Trade Receivables $40,000
The only account unconsidered here was Allowance for the noncollectable account.