Which statements are true about an infant's neurologic status? Select all that apply.

A positive Babinski (fanning of the toes) is a normal reflex at birth.

The newborn's rooting and sucking reflexes help the baby feed.

The newborn who suddenly extends his arms in the air when he hears a loud noise is displaying the Moro reflex.

An infant will learn to sit up before he learns to roll over.

Head lag beyond 4 months may indicate brain damage.