What CANNOT be added to a header or footer? Answer: A. Number of pages B. File path C. Sheet name D. Slicer What CANNOT be added to a header or footer? Answer: A. Number of pages B. File path C. Sheet name D. Slicer Number of pages Number of pages File path File path Sheet name Sheet name Slicer Slicer What CANNOT be added to a header or footer? Answer: A. Number of pages B. File path C. Sheet name D. Slicer.