Stewart Thinks That He Is Not Very Smart and Believes

Stewart thinks that he is not very smart and believes that his intelligence is fixed, so it is not likely to change. Which of the following is TRUE regarding research on beliefs about the self?

A) Stewart will be as open to learning and willing to face challenges as his counterparts who believe intelligence is malleable.
B) It is not possible to change some of Stewart's beliefs about his intelligence because they are so engrained in the culture.
C) Fairly simple interventions have been shown to change Stewart's way of thinking and, consequently, traits such as openness and resilience.
D) Fairly simple interventions have been shown to change Stewart's way of thinking and, consequently, traits such as openness and resilience, but only if he is from a high socioeconomic status background.