Ken Is a 12-Year-Old Boy of Average Intelligence, as Indicated

Ken is a 12-year-old boy of average intelligence, as indicated by his IQ scores. He loves school and works hard on his homework. Ken earns an A in every subject except math, where he has been achieving grades in the C+ range. Which of the following statements is correct?

A) Ken does not appear to have a learning disorder, because his achievement is consistent with expectations based on his intelligence.
B) Ken appears to have a math disorder because his math grade is so far below his other grades.
C) Ken appears to have a math disorder because there is a discrepancy between his intelligence and his achievement in many subjects
D) Ken does not appear to have a learning disorder, because he has shown that he can achieve when he wants to.