If a Researcher Observed That Most of the Individuals from a Given

If a researcher observed that most of the individuals from a given sample displayed an unassuming bias, what does this mean?

A) The people in this group believe their behavior is the result of their own effort, talents, and skills.
B) The people in this group believe their behavior is the result of external factors, such as luck and help from other people.
C) The people in this group refused to talk about their own success, but insisted on talking about own mistakes.
D) The people in this group said that they had no idea about why they were successful.
E) The people in this group did not believe that they were successful at all.