The Parent of a 3-Year-Old Child Voices Concerns About the Child's

The parent of a 3-year-old child voices concerns about the child's potential developmental delays.The parent reports an older child reached milestones significantly ahead of the younger child.An assessment reveals the child is able to assist with dressing and can play catch.Which of the following responses by the nurse is appropriate?

A) "Your child appears to be on target with the expected milestones for age."
B) "Your older child may simply be smarter than your 3 year old."
C) "I would recommend extensive testing to determine the source of the delays."
D) "Have you spoken with the health care provider about these delays?"