I need help I am very very confused on this one

Which of the following is a true statement about judges in the u.s. court system? (3 points) all judges are appointed at both the state and federal levels of the court system in the united states. judges are appointed at the federal level, and the system for selecting judges differs by state government. all judges are elected at the both the state and federal levels of the court system in the united states. judged are elected at the federal level, and the system for selecting judges differs by state government.