In the Edgeworth Box Diagram for Production

Multiple Choice

In the Edgeworth box diagram for production,

A) a point off the "contract curve" (or "production efficiency locus") cannot have more Production of one of the goods than can some point on the curve.
B) a point off the "contract curve" (or "production efficiency locus") can involve more Production of both goods than can any point on the curve.
C) a movement from autarky to trade can be associated with a movement along the "contract curve" (or "production efficiency locus') .
D) the "contract curve" (or "production efficiency locus") will always be the "diagonal"Of the box.