On 1 August, the sales ledger control account showed a debit balance of $1800. In August, a debt of $200 was written off as irrecoverable, and $10000 was collected from credit customers. By 31 August, the amount owed by credit customers was $3000. What was the total value of credit sales in August?
- A$7200
- B$11200
- C$11400
- D$11600