________ is software that runs on a notebook computer or PDA so it can be portable

Which of the following sets of statements creates a multidimensional array with 3 rows, where the first row contains 1 value, the second row contains 4 items and the final row contains 2 items?

a.``` int[][] items; items = new int[3][?]; items[0] = new int[1]; items[1] = new int[4]; items[2] = new int[2]; ``` b.``` int[][] items; items = new int[3][]; items[0] = new int[1]; items[1] = new int[4]; items[2] = new int[2]; ``` c.``` int[][] items; items = new int[?][?]; items[0] = new int[1]; items[1] = new int[4]; items[2] = new int[2]; ``` d.``` int[][] items; items[0] = new int[1]; items[1] = new int[4]; items[2] = new int[2]; ```

PowerPoint presentations are saved with a _____ file extension.

A. .pptx B. .ppt C. .ptpx D. .ppxt