Select the correct option to test your answer: A $$\frac{{\vartriangle qd}}{{\vartriangle P}} \cdot \frac{P}{{qd}}$$ - Price elasticity of demand B $$\frac{{\vartriangle qx}}{{\vartriangle Py}} \cdot \frac{{Py}}{{qx}}$$ - Cross elasticity of demand C $$\frac{{\vartriangle qs}}{{\vartriangle P}} \cdot \frac{P}{{qs}}$$ - Elasticity of supply D All of these Correct Answer: Option D (All of these) Verified correct option for Agriculture (Agricultural Economics).