The correct sequence in a reflex arc is

A)receptor,efferent nerve,nerve center,afferent nerve,effector.
B)effector,afferent nerve,nerve center,efferent nerve,receptor.
C)receptor,afferent nerve,nerve center,efferent nerve,effector.
D)effector,efferent nerve,nerve center,afferent nerve,receptor.
E)All of the choices are correct.