In the page setup dialog box, following option(s) are available for…

In page layout and document design (such as in Microsoft Office apps), Orientation refers to the direction in which a document is displayed or printed.

The Page Setup dialog box provides two standard choices:

Portrait: The page is oriented vertically. The height of the page is greater than its width (e.g., standard letters or business reports).

Landscape: The page is rotated 90 degrees and oriented horizontally. The width of the page is greater than its height (e.g., photo albums, wide tables, or presentations).

Since both layout orientations coexist as the primary choices in the Page Setup window, Option C is the correct answer.