Astudent wants to add a watermark to an excel file and follows the steps below.
1.select insert tab
2click on ribbon for header and footer in the text group
3.select file name
4.click on the desired picture for the watermark
5.click open
which step is incorrect, and why?

a. step one is incorrect. the student should select the cell, click the file tab, and select “open” to insert the picture as the watermark.
b. step two is incorrect. the student should select the picture icon from the illustrations group to insert the watermark.
c. step three is incorrect. the student should select the desired picture for the watermark from the header and footer tools in the text group.
d. step four is incorrect. the student should type the file name of the desired picture for the watermark in the text box.