When pointing to the border between two columns on the column heading, the pointer displays as a ...

When pointing to the border between two columns on the column heading, the pointer displays as a ________.
 
  A) flashing arrow B) ruler
  C) two-headed arrow D) four-headed arrow

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Match the following keys with their function:
 
  I. fill handle
  II. null
  III. what-if analysis
  IV. conditional formatting
  V. comparison operators
 
  A. symbols used to compare two values
  B. used to enter a series of related labels or formulas
  C. an empty cell
  D. trying different combinations of values to see how the changes affect the calculation
  E. changes fill and font colors based on set criterion