A new North Carolina school bus applicant will drive an air-brake school bus and has no CDL. Which testing path is most complete before CLP issuance?

1. Only a regular Class C license is required
2. Pass required CDL knowledge tests, including general knowledge, air brakes if applicable, passenger, and school bus, with 80% or higher within the 90-day score window
3. The requirement applies only to hazardous materials drivers
4. The applicant can skip sponsorship after passing one written test