How do I arrive at the correct answer?

The cash account shows a balance of $45,000 before reconciliation. The bank statement does not include a deposit of $2, 300 made on the last day of the month. The bank statement shows a collection by the bank of $940 and a customer's check for $320 was returned because it was NSF. A customer's check for $450 was recorded on the books as $540, and a check written for $79 was recorded as $97. The correct balance in the cash account was $45, 512. $45, 548. $45, 728. $45, 848