You Hear a Scream and Look Up to See a Toddler

You hear a scream and look up to see a toddler, Cassandra, biting another student. How can you react to this effectively?

A) Demand that Cassandra make an apology to you and the other child.
B) Sternly tell Cassandra that biting is not allowed because it hurts others.
C) Ignore it unless it begins happening more frequently.
D) Notify your supervisor and call in a specialist to handle the situation.