CompTIA A+ Core 1 220-1101 – Question005 Vertical streaks are appearing on the output of a laser printer. Which of the following items is the MOST likely cause? A. RollerB. DrumC. Transfer beltD. Ribbon Show Answer Hide Answer Correct Answer: B Explanation: Reference: https://smallbusiness.chron.com/causes-lines-laser-printer-57916.html