The correct answer is D: Technician, General, Amateur Extra. These are the three license classes currently available from the FCC for new amateur radio licenses. The FCC eliminated several older license classes (Novice, Technician Plus, and Advanced) and now only issues these three classes. The current licensing structure was simplified to these three classes, each requiring progressively more difficult examinations. Technician is the entry-level license, General provides expanded HF privileges, and Amateur Extra offers full privileges on all amateur bands. The older Novice and Technician Plus classes are no longer issued, though existing licenses in those classes remain valid. The Advanced class was also discontinued, with existing Advanced licensees grandfathered into the system.