Pressing the Tab key in the last cell in a spreadsheet creates a blank row

Match the following components of Office 2010 and its function:

I. Backstage A. easy access to commonly executed task II. Quick Access Toolbar B. displays the current file name and application III. title bar C. used to print, save, open, close, and share a file IV. Ribbon D. contains tabs, groups, and commands V. Dialog Box Launcher E. opens a corresponding box that provides access to precise tools

The pointer in the last node of a linked list is often set to NULL because:

A. in a search, we need to have some way of knowing when we’ve reached the end of the list B. it doesn’t point to anything C. it prevents memory leak D. it conserves the memory used in the linked list by 25%