1. What is the correct way to describe the demand schedule?(A) \( Q = 20 + 10P \)(B) \( \mathrm{P} = -2 + 1 / 10\mathrm{Q} \)(C) \( Q = 20 - 10P \)(D) \( \mathrm{P} = 10 - 1 / 20\mathrm{Q} \)