a trail balance at december 31 2020 before adjustment included the following debit credit account receivable 75000 allowance for doubtful debt 250 sales 8460 sales returns and allowances 4250 required a) give journal entry assuming that the estimate of uncollectible is determined ny taking 3% net accounts receivable at december 31 2020 b) what is net realizable value of receivables at December 31 2020 after adjustments? c) prepare journal entry to record the customer account of 1500 was written off in February 2020 d) in December 2020 the company had collected 1000 of the account that previously written off in part c above Record necessary journal entries