Prior to recording the following, E. Perry Electronics, Incorporated, had a credit balance of $2,000 in its Allowance for Doubtful Accounts 1. On August 31, 2017, a customer balance for $300 from a prior year was determined to be uncollectable and was written off. 2. On December 15, 2017, the customer balance for $300 written off on August 31, 2017, was collected in full. Required: Using the following categories, indicate the accounts affected and the amounts. (Enter any decreases to accounts with a minus sign.) Transaction Assets = Liabilities + Shareholders' Equity 1. 2a (Reversal of write-off) 2b (Collection from customer)