Sam Could Read When He Was 4 and Could Do

Sam could read when he was 4 and could do addition and subtraction by the time he was 5. By sixth grade, however, he complained that he didn't understand what the teachers wanted from him, that he felt he was he "stupid," and so he refused to go to middle school. Recognizing his sense of inferiority in the context of knowing Sam's high ability led his teacher to consider that Sam:

A) may have had an undiagnosed learning disability undermining his sense of competence.
B) was angry that his teachers didn't recognize his competence.
C) wanted easier work to feel more competent like he did when he was younger.
D) did not have the ability to achieve competence.