A person who believes in his incompetence will ______.

A．A child may accept another person's underestimate of his ability.
B．A child may think that he is too stupid to make the most of his mental faculties.
C．A person may have the idea that he is incapable of doing good work.
D．Some old people believe that they are capable of learning anything new.

A．people are not as capable as they think
B．people can be more capable than they think
C．lack of knowledge leads to failure
D．lack of ability results in lack of determination