The function P y 0 034y 3 642y 252 560 represents the population P in millions of people in 2005 that were y years of age or older The dependent variable is P and the independent variable is y b Evaluate P 20 P 20 193 32 Round to three decimal places as needed Choose the answer below that explains the meaning of P 20 The value of P 20 is equal to the number of people in millions O A who were 20 years of age or older in 2005 OB in 2025 OC born in 2025 D who were 20 years of age in 2005