When the Newborn's Crib Was Moved Suddenly, the Nurse Noticed

When the newborn's crib was moved suddenly, the nurse noticed that his legs flexed and the arms fanned out, and then both came back toward the midline. The nurse would interpret this behavior as:

A) The Moro reflex was elicited
B) The full-term infant should not react to sudden movement
C) There may be an abnormality in the musculoskeletal system
D) This is abnormal for a full-term infant