10. Which of the following is/are popular types of optical disks?
CD ROM
CDR
O CD RW
All of these​

To maintain clarity and focus lighting might be needed

Which of the following "invisible" marks represents an inserted tab?

Which phrase is the best definition of a pivottable a a table containing data that is organized horizontally b a table used to calculate financial pivot values c a tool used to summarize data d a table containing specific formatting