A nurse is assessing a newborn who was exposed to heroin during pregnancy. Which of the following findings should indicate to the nurse that the newborn is experiencing neonatal abstinence syndrome? (Select all that apply.)

A. High-pitched, excessive crying is a common sign of neonatal abstinence syndrome (NAS). B. Tachypnea (rapid breathing) is a typical respiratory symptom of NAS. C. Body tremors and jitteriness are classic signs of withdrawal in newborns. D. Newborns with NAS typically exhibit hyperactivity, not extreme lethargy. E. Reflexes are usually increased (hyperactive), not decreased, in NAS.