When HLA Programmers try to declare reference parameters as function parameters, which of the following function signatures should be used?

Group of answer choices

procedure foobar$($ var k : int$8)$; @nodisplay; @noframe;

procedure foobar$($ k : int$8)$; @nodisplay; @noframe;

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procedure foobar$($ k : var int$8)$; @nodisplay; @noframe;