To answer this question, you need to understand the concept of the Boolean data type.
Option A) The Boolean data type is not specific to being signed or unsigned. It is simply a data type that represents true or false values.
Option B) This option is correct. The Boolean data type has two states: true and false. It is used to represent logical values.
Option C) The Boolean data type is not necessarily displayed as "yes" or "no". It is commonly displayed as "true" or "false", but the actual representation can vary depending on the programming language or context.
Option D) This option is incorrect because option A is incorrect. The Boolean data type is not defined as being unsigned.
Option E) This option is correct. The Boolean data type has two states (true and false) and it is not restricted to being signed or unsigned. Additionally, the representation of a Boolean value can vary depending on the programming language or context.
Therefore, the correct answer is E) All of the above.