You can ____ a single contact or multiple pages of contacts displayed as cards or in phone lists.

____ is a valid int value.

A. 46,259 B. 46259 C. 462.59 D. -32.00

To change to a directory that is up one level from the current working directory in the UNIX hierarchical directory tree structure, you can type ____.

A. / B. .. C. . D. ^