Select the correct option to test your answer: A $$\frac{{{P_K}}}{{{P_L}}}$$ B $$\frac{{{P_L}}}{{{P_K}}}$$ C $$ - \frac{{{P_L}}}{{{P_K}}}$$ D $$ - \frac{{{P_K}}}{{{P_L}}}$$ Correct Answer: Option B ($$\frac{{{P_L}}}{{{P_K}}}$$) Verified correct option for Commerce (Economics).