Which Is True About Children with Generalized Anxiety Disorder

Which is true about children with generalized anxiety disorder?

A) They needn't experience any symptoms as a result of their worrying, while adults must.
B) They must experience a somatic symptom as a result of their worrying, while for adults the symptom must be cognitive.
C) They must experience a somatic symptom as a result of their worrying, while adults must experience at least two symptoms, of which at least one must be cognitive.
D) They must experience at least one symptom as a result of their worrying, while adults must experience at least three.