Washington lists the School Bus knowledge test as 20 questions with 16 correct required. How does that relate to the federal CDL knowledge-test passing standard?

1. It is below the federal standard because 16 of 20 is only 60 percent
2. It meets the federal standard because 16 of 20 is 80 percent
3. It exceeds the federal standard because the federal standard is 50 percent
4. It is unrelated because federal rules do not cover knowledge test passing scores