On 31 October, a business bank statement showed a credit balance of $2690. By that date, cheques that had been issued but had not yet been presented amounted to $850. Calculate the bank balance in the cash book on 31 October.
- A$1840\ \text{credit}$
- B$1840\ \text{debit}$
- C$3540\ \text{credit}$
- D$3540\ \text{debit}$