The Economy Moves from Point A,where It Produces 100X and 200Y,to

The economy moves from point A,where it produces 100X and 200Y,to point B,where it produces 200X and 150Y.It follows that

A) point A is a productive inefficient point.
B) point A may be a productive inefficient point.
C) point A may be a productive efficient point.
D) point B is a productive efficient point.
E) b and c