A Mother Brings in Her Newborn Infant for an Assessment

A mother brings in her newborn infant for an assessment and tells the nurse that she has noticed that whenever her newborn's head is turned to the right side,she straightens out the arm and leg on the same side and flexes the opposite arm and leg.After finding this on examination,the nurse would tell her that this is:

A) abnormal and is called the atonic neck reflex.
B) normal and should disappear by the first year of life.
C) normal and should disappear between 3 and 4 months of age.
D) abnormal. The baby should be flexing the arm and leg on the right side of his body when the head is turned to the right.