In the Initial Parent Interview Concerning a Preschool Child Who

In the initial parent interview concerning a preschool child who stutters, the question "Was the onset of stuttering sudden or gradual?" is pertinent because:

A) sudden onset tends to be associated with organic etiology
B) gradual onset tends to be associated with psychological etiology
C) gradual onset tends to be associated with more severe stuttering
D) sudden onset tends to be linked to maternal history of stuttering
E) none of the above