Which one of the following is true of the RETAIN statement in a SAS DATA step program?

Question

Options

• AA.It can be used to assign an initial value to N.
• BB.It is only valid in conjunction with a SUM function.
• CC.It has no effect on variables read with the SET, MERGE and UPDATE statements.
• DD.It adds the value of an expression to an accumulator variable and ignores missing values.

• A
  6% (2)
• B
  3% (1)
• C
  78% (25)
• D
  13% (4)

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