單項(xiàng)選擇題

A user states that the laser printer is leaving a black line on all pages being printed. Which of thefollowing is the MOST likely cause and solution for this issue?（）

A. Faulty driver; reinstall or update driver
B. Bad fuser; place service call to printer manufacturer.
C. Excess toner on drum; perform maintenance (e.g. clean drum surface).
D. Deteriorating rollers and worn brushes; replace rollers and brushes.


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