Bank Reconciliation

Hello tutor,
Pls i need your help on this question.
sharmin’s bank statement at 31 october 20×8 shows a balance of $13400. she subsequently discovers that the bank has dishonoured a customer’s cheque for $300 and has charged bank charges of $50, neither of which is recorded in the cash book.
There are unpresented cheques totalling $1400 and an automatic receipt from a customer of $195 has been recorded as a credit in sharmin’s cash book.
Sharmin’s cash book balance prior to correcting the errors and omissions was
A.$11455
B.$11960
C.$12000
D.$12155

Thank you