The diagram to the right shows the Home economy's pretrade equilibrium at point X. (Click anywhere on the graph and move the slider to vary the relative price.) In this closed economy, it is the case that A. the value of production exceeds the value of consumption. B. consumption cannot occur anywhere outside the production possibilities frontier. C. the amounts of each good consumed and produced may differ. D. consumption can vary along the line tangent to the PPF at point X