Which of the following steganography utilities exploits the nature of white space and allows the user to conceal information in these white spaces?

A.
Snow

B.
Gif-It-Up

C.
NiceText

D.
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Explanation:
The program snow is used to conceal messages in ASCII text by appending whitespace to the end of lines. Because spaces and tabs are generally not visible in text viewers, the message is effectively hidden from casual observers. And if the built-in encryption is used, the message cannot be read even if it is detected.