________ a folder to assign it a new name

What does PDF stand for?

A) Public Document Format B) Portable Document File C) Public Document File D) Portable Document Format

A user notices the printer that is used for printing global shipper's labels is missing columns in the printed labels. The special label stock is new and appears to be fine. Which of the following should the technician perform FIRST when troubleshooting this problem?

A. Remove any stuck labels from the paper path B. Clean the pickup rollers and check them for wear C. Clean the print head with approved materials D. Replace and realign the print head