Checks that are more than six months old are called:

A) postdated checks.
B) altered checks.
C) stale checks.
D) antedated checks.

Stale Checks

Checks that have not been cashed or deposited within a certain period, typically six months, and may not be honored by a bank.

Antedated Checks

Checks written with a date earlier than the actual date of writing, often used in accounting to reflect a transaction that occurred at an earlier time.

Postdated Checks

Checks written with a future date, implying they cannot be cashed or deposited until that date arrives.