A 20-year-old with a category B licence is applying for category C and has completed ordinary-length basic professional competence training. Which timing is most accurate?

1. They may use the professional-qualification route that can allow category C from age 18, if other requirements are met
2. They must wait until 24 because all lorry licences require that age
3. They may take the test without a driving licence permit
4. They can skip the category C driving test