Which answer matches this clue: the year AD 69 when four emperors — Galba, Otho, Vitellius, and Vespasian — ruled in succession?

• A Year of the Five Emperors
• B Year of the Four Emperors ✓
• C Year of the Six Emperors
• D Year of the Seven Emperors

The Year of the Four Emperors followed Nero's suicide and exposed the secret that emperors could be made outside Rome by the legions.