Answer:
Sales Returns and Allowances $140 and Accounts Receivable $140
Explanation:
When goods are returned, the sales revenue decreases through Sales Returns and Allowances which is an expense so it is debited and the goods sold on account so the Accounts Receivable which is an asset decreases so it is credited.
Date Account Titles and Explanations Debit Credit
Sales Returns and Allowances $140
Accounts Receivable $140
(To record sales returns)