What documentation must a New York driving school maintain regarding its instructors, according to Commissioner's Regulations Part 76?

1. No documentation is required beyond retaining the instructor's current MV-524 certificate
2. Records of instructor qualifications, training completion, certification dates, and any disciplinary actions
3. Only the instructor's driver-license number, without qualification or training records
4. Only a copy of the instructor's resume, without certification and disciplinary records