Which of the Following Is True About Screening for Communication

Which of the following is true about screening for communication disorders?

A) Communication disorders can only be diagnosed accurately when a child is at least 6 years old and can talk.
B) You only need to learn about one way to screen,because all schools use the same procedure.
C) If English is not a child's first language,find out if the child functions normally in their native language.
D) Teachers can screen for this disorder without input from families.