Which of the following are the features of an 'idiolect"?

(A). It is the particular form of a language that is specific to a group of performers depending on their geographical location.

(B). It is a language variety that emanates from the type of language used by a particular social group of people.

(C). It emphasizes the speech traits that are habitual to an individual.

(D). This word is mainly used by linguists when discussing differences in speech from one person to another.

Choose the correct answer from the options given below: