Ahmed supplied the information below: trade receivables at $1$ January $2022$: $15000$ for the year ended $31$ December $2022$: credit sales: $85000$ cash sales: $12000$ cheques received from trade receivables: $65000$ irrecoverable debts: $2000$ By what amount had trade receivables risen by the close of the financial year?
- A$18000$
- B$30000$
- C$33000$
- D$45000$