What would be the BEST answer to give to parents of a child recently diagnosed with ADHD in response to their questions about what caused it?

A) "It is probably due to a brain malformation that can be corrected with surgery."
B) "Family dysfunction and high levels of family stress cause ADHD."
C) "It results from the reactions of others to a child who is just an active child."
D) "Our best guess is that ADHD results from an interaction of several factors."

Ans: D) "Our best guess is that ADHD results from an interaction of several factors."