The formula for the Laspeyres price index is (o is the base year and n is the given year) ?

• A. P = ∑Poqo/∑poqo
• B. P = ∑Poqo/∑pnqn
• C. P = ∑Pnqo/∑poqo
• D. P = ∑Poqn/∑poqo