Which of the Statements Below About Social Interest Is True

Which of the statements below about social interest is true?

A) While Adler considered social interest to be innate, he also believed that it must be learned, developed, and used.
B) Adler believed most people to be incapable of developing social interest even though it was something to which they should aspire.
C) In his later years, Adler changed his beliefs about social interest and focused on addressing unconscious dynamics as the key to mental health.
D) The concept of social interest was originally introduced by Freud, and Adler incorporated it into his theory.