A laser printer has an error tray two paper jam but tray two does not have any paper in it. Which of the following should the technician do FIRST? （）

• A、Replace the tray two paper sensor and run the printer self test.
• B、Remove the tray two paper sensor and clean the printhead.
• C、Check the tray two paper sensors for blockage and run the printer self test.
• D、Check the tray two paper rollers for blockage, clean the printhead, and run the printer self test.