Select the correct option to test your answer: A $$\frac{{\text{Y}}}{{{\text{WR}}}}$$ B $$\frac{{\text{Y}}}{{{\text{ET}}}}$$ C $$\frac{{\text{Y}}}{{{\text{IR}}}}$$ D None of the above Correct Answer: Option B ($$\frac{{\text{Y}}}{{{\text{ET}}}}$$) Verified correct option for Agriculture (Agronomy).