Where may an applicant take a South Carolina CDL knowledge test, and what testing-time rule should they remember?

1. At any SCDMV branch, but SCDMV does not allow knowledge testing after 4:00 p.m.
2. Only at third-party truck schools, and testing is available until closing
3. Only at CDL skills-test sites, and appointment times are required
4. Only online, and tests may be started at any time