thE DECrEAsE in worlD FooD priCEs wAs A rEsult oF _________.
A．A shArp DEClinE in thE Cost oF FooD proDuCtion
B．A shArp DEClinE in thE purChAsing powEr oF thE ConsumErs
C．thE ovErproDuCtion oF FooD in thE FooD importing CountriEs
D．thE ovErproDuCtion on thE pArt oF thE mAjor FooD Exporting CountriEs