During the Morning Rounds, a Toddler Client with Autism Starts

During the morning rounds, a toddler client with autism starts to run and he head bangs in the all. What would be the best initial action of the nurse:

A) explain to the toddler that his behavior is not acceptable.
B) ask the toddler to stop to avoid injury.
C) restrain the toddler to avoid injury.
D) allow the child to act out his feelings.