The Economy Moves from Point A,where It Produces 100 Units

The economy moves from point A,where it produces 100 units of X and 200 units of Y,to point B,where it produces 200 units of X and 150 units of Y.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