in UNIX $/$ LINUX, I$/$O redirection refers to what?

A$.$ The sending of all input and output to dev$/$null

B$.$ The redirection of standard file handlee such as STDIN

C$.$ Your program reading input from your keyboard

D$.$ Creating new file handles for output

$.$

$.$

$.$

$.$

In Python, what is the purpose of the escape character $"$

$"?$

A$.$ To tell Python to continue the current statement on the next line

B$.$ To indicate a new line character