Directions: True or False: Write T if the statement is true and F if the statement is false. (5 pts) 1.______ Microsoft Excel is an electronic spreadsheet designed to perform mathematical calculations. 2. ____ A workbook contains one or more worksheet. 3. ____ Sheet tabs cannot be renamed. 4. _____ The ribbon is composed of Ribbon tabs, groups and commands. 5. ____ The active cell shows the cell reference.