Which of the Following Statements Is True About Developmental Dyslexia

Which of the following statements is true about developmental dyslexia?

A) Children who have this disorder have marked difficulty in reading and in spelling that is not explained by generally poor ability
B) Children who have this disorder have marked difficulty in reading and in spelling that is explained by generally poor ability
C) Children who have this disorder have marked difficulty in reading but not in spelling
D) Children who have this disorder have marked difficulty in spelling but not in reading
E) Children who have this disorder are particularly good at arithmetic