While accounting for accounts receivable for Blockbuster Ltd, the following information became available to the accountant: - At 1 July 2018, the Allowance for Doubtful Debts account balance was $8,100. - To 30 June 2019 , debts amounting to $18,216 were written off as bad, and at 30 June 2019 , the required allowance for doubtful debts was calculated under the ageing method to be $9,450. - To 30 June 2020, debts amounting to $13,959 were written off and at 30 June 2020 , the allowance for doubtful debts was calculated under the ageing method to be $10,845. - Transactions are GST Inclusive. Required a) Prepare and balance the Allowance for Doubtful Debts account and the Bad Debts Expense account for years ending 30 June 2019 and 30 June 2020. b) Prepare the necessary general journal entries to bring the allowance for doubtful debts to the appropriate amount at 30 June 2019 and 30 June 2020