The New Growth Theory Suggests That as the Economy Grows

The new growth theory suggests that as the economy grows

A) there are only movements along the production function but no shifts in the curve.
B) there are only shifts in the production function but no movements along the curve.
C) there are both shifts in and movements along the production function.
D) there are neither shifts in nor movements along the production function.
E) the production function will eventually become obsolete because production will increase so much.