What does a file extension tell your computer? A. What type of program to open

B. When the file was created

C. Where a program is saved

D. Which file name to display

  to change the number of rows and columns displayed by the excel object a. select the object and drag a size handle on the active object. b. deselect the object and drag a size handle of the object. c. deselect the object and drag a row or column divider of the object. d. select the object and drag a row or column divider on the active object.