A New Jersey broker must keep copies of unaccepted offers for how long?

Five years is incorrect because this retention period typically applies to other documents like transaction files or commission records, not specifically to unaccepted offers in New Jersey.

Six years is incorrect as this retention period generally applies to different types of records in New Jersey, such as trust account records, not unaccepted offers.

Ten years is incorrect because this retention period is typically required for more permanent records like broker-dealer records in some states, not for unaccepted offers in New Jersey.