Which New Jersey CDL age statement is correct according to the MVC commercial driver manual?

1. The minimum qualifying age is 16 for all CDL classes
2. The minimum qualifying age is 18, but applicants must be 21 or older for interstate commercial operation and certain endorsements such as hazardous materials or passenger
3. All New Jersey CDL applicants must be at least 25
4. Age limits apply only to school bus drivers and not to other CDL applicants