How do we get the width from a Picture object?

Which of the following is NOT an example of a statistical function?

A) COUNTIFS B) SUMIF C) AVERAGEIF D) AVERAGEIFS

Member function definitions:

a. Always require the binary scope operator (::). b. Require the binary scope operator only when being defined outside of the definition of their class. c. Can use the binary scope operator anywhere, but become public functions. d. Must use the binary scope operator in their function prototype.