When writing shellcodes, you must avoid _________________ because these will end the string.

A.
Null Bytes

B.
Root Bytes

C.
Char Bytes

D.
Unicode Bytes

Explanation:
The null character (also null terminator) is a character with the value zero, present in the ASCII and Unicode character sets, and available in nearly all mainstream programming languages. The original meaning of this character was like NOP — when sent to a printer or a terminal, it does nothing (some terminals, however, incorrectly display it as space). Strings ending in a null character are said to be null-terminated.