To use extended attributes, you need to define the correct terminal type and enable the necessary settings. Let's go through each option to understand why it is correct or incorrect:
Option A) Define EXTATT=YES and the correct terminal type - This option is correct because it specifies the correct attribute, "EXTATT," and enables it by setting it to "YES." Additionally, it mentions the need to define the correct terminal type.
Option B) Define EXTDATT=YES and the correct terminal type - This option is incorrect because it misspells the attribute as "EXTDATT" instead of "EXTATT."
Option C) Define EXTATRB=YES and the correct terminal type - This option is incorrect because it incorrectly spells the attribute as "EXTATRB" instead of "EXTATT."
Option D) Define XTDATRB=YES and the correct terminal type - This option is incorrect because it incorrectly spells the attribute as "XTDATRB" instead of "EXTATT."
The correct answer is Option A. This option is correct because it specifies the correct attribute ("EXTATT") and enables it by setting it to "YES." Additionally, it mentions the need to define the correct terminal type.